名 bottom，base，the heart of a matter，ins and outs；动 [书] （达到） end up with，come to；代 what，this，so，such ；

[例句] 金矿并非无底的宝藏，金子终究会被采光。 A gold mine is not a bottomless pit, the gold runs out.

[例句] 艾森豪威尔离开白宫，退隐到他在葛底斯堡的农场。 Eisenhower left the White House and retired to his farm in Gettysburg.

[英] ground floor，[美] first floor，basement，bottom，rough coat ；

[例句] 两栋小楼的底层已经彻底翻修过。 The downstairs of the two little houses had been entirely refashioned.

[例句] 从底层干起，然后努力一步步升上去。 Start at the bottom and try to work your way up.

basement，floor，base，outsole，fundus ；

[例句] 皮肤基底细胞 basal cells of the skin

[例句] 一线性空间的每一基底包含同样数目的向量. Every basis of a linear space contains the same number of vectors.

bottom，bottom side，foot (pl. feet)，root，base ；

[例句] 导弹从那架运输机的底部飞了出来。 The missiles emerge from the underbelly of the transport plane.

[例句] 她躺在楼梯底部，痛得呜咽着。 She lay at the bottom of the stairs, whimpering in pain.

lampstand，foundation，pedestal，bed，base ；

[例句] 这张桌子只不过是在底座上安了一块圆形刨花板。 The table is simply a chipboard circle on a base.

[例句] 旋紧水管之前,检查一下洗衣机是否已牢牢地固定在底座上了. Make sure the washer is firmly seated before tightening the pipe.

baseboard，baseplate，footwall，[采矿] floor （位于矿脉下面的岩层， 亦称“底帮”、“底盘”或“下盘”），motherboard ；

[例句] 在照相底板上不同的同位素的离子会聚于不同点. Ions of different isotopes converge at different points on the photographic plate.

[例句] 在铅块上方某一距离处放一照相底板. Some distance above the lead block a photographic plate is placed.

tread，sole (of a shoe) ；

[例句] 我每天都穿那双旧鞋，有一只鞋底已经脱胶了。 I wear my old shoes every day. One sole has come unglued.

[例句] 鞋底是皮革做的。 The soles are made of leather.

bottom，base，details，ins and outs，grounding ；

[例句] 她的衣服白底子上有粉红花朵. Her dress has pink flowers on a white background.

[例句] 他的汉语底子厚. He has a good grounding in Chinese.

ocean floor，fondo，benthos，benthon，ocean bed ；

[例句] 洋底由平坦的平原构成. The ocean bottom is made up of smooth plains.

[例句] 在陆地和洋底要设置许多高增益的台站. Many high - gain stations will be deployed on land and ocean bottom.

bottom of a ship's hold ；

[例句] 各型船中,输送舱底污水、废油. All types of ships conveying for sewage and wasteoil.

[例句] 轮机的主要机器设备均布置在舱底. Main machinery equipment are arranged at the bottom.

（基础） foundation，ins and outs，cause，root，bedrock ；

[例句] 这个班的学生语法根底好. The class is well grounded in grammar.

[例句] 我的科学根底要我多作细心的概括. My scientific background has taught me to make more cautious generalizations.

to the end，to the finish，at last，in the end，bitter end ；

[例句] 我真的不理解这到底有什么意义，简直是愚蠢透顶。 I don't see the point in it really. It's just stupid.

[例句] 我不能判定他到底是英勇无畏还是精神失常。 I couldn't decide whether he was incredibly brave or just insane.

batholith，chassis，[计] chasis，underpan ；

[例句] 车子底盘的3块隔热板已经脱落了。 Three insulating panels had come adrift from the base of the vehicle.

[例句] 他会把钢丝绳拴在汽车底盘上，用卷扬机把汽车吊到运河岸上。 He would attach a cable around the chassis of the car and winch it up on to the canal bank.

primer，priming，[化] base coat，ground coat ；

[例句] 很多现代的木船将采用环氧涂层作底漆。 On many modern wooden boats, epoxy coatings will have been used as a base for varnishing.

[例句] 工厂给汽车上了透明罩漆，以防底漆褪色。 Cars were covered with clear-coat finish at the factory to protect the underlying paint from fading.

draft，manuscript ；

[例句] 我必须把这篇文章底稿退还给作者. I must return this manuscript to the author.

[例句] 请在检查底稿上签字. Please sign the inspection statement.

[纺]bottoming，[工]priming，render，rendering ；

[例句] 我说,先投一万打底. I mean to put in ten thousand. Ground floor.

[例句] 使用化妆品之前先用点润肤脂打底. Put some moisturizer on as a base before applying your make - up.

dinting，caunch(e)，foot-ridding，brushing，[电影]Interlligencer；

[例句] 斯旺森说服赫布利去做卧底以便将凶手抓获。 Swanson persuaded Hubley to work undercover to capture the killer.

[例句] 记者通知了警方，后者于是为诱捕史密斯而安插了一名卧底侦探。 Journalists informed police who planted an undercover detective to trap Smith.

[解] fundus，eye ground，fundus oculi，eyeground ；

[例句] 他的眼睛近视得利害,放到眼底下才看得清. He is so nearsighted that he can just see the things put before his eyes.

[例句] 树梢从他眼底一闪即去, 大地骤然向他迎面伸开巨大的手掌. Treetops fall fast behind him; the vast land welcomes him with extended arms.

underlayment，substrate，substratum，supporting base，underlay ；

[例句] 衬底温度对于无序区积累的影响是很显著的. The effect of substrate temperature on the accumulation of disorder is substantial.

[例句] 衬底可能是相当致密的和稳定的. The substrates can be relatively close and stationary.

basis cranii ；

[例句] 颅底的损害及其外科治疗是否会引起癫痫性发作? Do skull base lesions and their surgical treatment cause epileptic seizures?

[例句] 大多数脊索瘤发生在颅底 、 颈椎及荐骨. Most chordomas are found at skull base, sacrum and cervical spine.