数 three，more than two，several，many；名 （姓氏） a surname ；

[例句] 演奏钢琴的戴夫将这支曲子反复弹了两三遍。 Dave, the pianist, played it over a couple of times.

[例句] 在纸板上涂两三层清漆使其变硬。 Give the cardboard two or three coats of varnish to harden it.

[地质] delta ；

[例句] 里奥格兰德河三角洲曾是一片遍布荆棘和沼泽的荒废之地。 The delta region of the Rio Grande river was a forsaken land of thickets and swamps.

[例句] 在三角洲挖战壕有什么用? What is the use of digging trenches in the Delta?

[数] delta，triangle，square，trigon ；

[例句] 三角形内角总和为180度。 The sum of all the angles of a triangle is 180 degrees.

[例句] 桌上有一只用珠子串成的小三角形作装饰的盒子。 On the table sat a box decorated with little pearl triangles.

triangle，trigonometry，trigonum (pl. trigona)，[电影]Sankaku；

[例句] 她胳膊上还吊着三角巾，就回来工作了。 She was back at work with her arm in a sling.

[例句] 三角钢琴被代之以一架粗鄙的小电子琴。 The grand piano has been replaced with a small, inelegant electric model.

trebling，ter，treble，threefold，thrice ；

[例句] 他超过醉酒驾驶规定标准快三倍了。 He was nearly three times over the drink drive limit.

[例句] 这种金属以前的估价是目前价格的两到三倍。 The metal had been valued at twice or thrice its current price.

third-degree，three-dimensional ；

[例句] 他身上三度烧伤的面积达98%。 He suffered third-degree burns over 98 per cent of his body.

[例句] 三度获得世界冠军的尼尔森·皮奎特受了重伤。 Nelson Piquet, three times world champion, was grievously injured.

third，thirdly ；

[例句] 列宁格勒是他在异地安家的第三个外国城市。 Leningrad was the third alien city to offer him a surrogate home.

[例句] 简的进球帮助英国队在巴塞罗那奥运会上获得了第三名。 Jane's goals helped Britain win third place in the Barcelona games.

whitetip clover，shamrock （蛇麻三叶草； 白花酢浆草），clover，trefoil ；

[例句] 禾木科草和三叶草播种深度应为 12-20 毫米. Grass and clover seed should be sown at a depth of 12 - 20 mm.

[例句] 例句梅花看上去有点像三叶草的图案. The Club looks a little like a leaf clover design.

over and over again，time and again，again and again，repeatedly，oft ；

[例句] 她讲话时斟酌再三，说得非常慢。 She spoke very slowly, weighing what she would say.

[例句] 他对自己的每次行动都再三思量是否合适。 He wonders about the appropriateness of each move he makes.

tripod，tripod leg，brandreth，brandrith，spider ；

[例句] 三脚架有助于调准和稳定相机。 A tripod will be useful to align and steady the camera.

[例句] 标准尺寸的三脚架可能会不便于使用，用于拍摄低角度的物体时尤其如此。 Full-size tripods can be awkward, especially if you'reshooting a low-level subject.

three years old ；

[例句] 史密斯比我大三岁. Smith is senior to me by three years.

[例句] 她比我小三岁. She is my junior by three years.

March，the third month of the lunar year，the third moon，Mar. ；

[例句] 我饶有兴致地阅读了杰曼·格里尔在三月那期发表的文章。 I read Germaine Greer's article in the March issue with particular interest.

[例句] 日期由三月推迟到四月. The date had been put back from March to April.

thirteen，baker's dozen，a baker's dozen，[电影]The Thirteen；

[例句] 很多人认为十三是个不吉利的数字. Many people think thirteen is an evil number.

[例句] 一本题为《金色十三》的新书讲述了他们的故事。 Their story is the subject of a new book titled "The Golden Thirteen".

[植] pansy，herb trinity，herbs trinity，herb trinities ；

[例句] 控释肥CAU3144F、COMPO对雏菊、矮牵牛 、 三色堇的应用效果显著. CRF of CAU 3144 F was the most optimal for petunia, COMPO for pansy and daisy respectively.

[例句] 三色堇是我国冬春常用的草本花卉,在我国广泛栽培. Pansy Viola wittrockiana is an important ornamental plant used in the winter and early spring.

trigonometry ；

[例句] 他的三角学分数很低. He received a low mark for trigonometry.

[例句] 该山的高度已用三角学测得. The height of the mountain has been determined by trigonometry.

[医] triple，triplex，triploid，threefold，trinal ；

[例句] 由于额外的工作他领取了三倍的工资. He received triple wages for all his extra work.

[例句] 他因超额工作得到三倍的报酬. He received triple pay for his extra work.

thirty ；

[例句] 塞茜尔三十出头，曾经做过演员、舞蹈演员和歌手。 Cecile was in her early thirties, a sometime actress, dancer and singer.

[例句] 显然，莫扎特在二十几岁到三十刚出头时，身体非常好。 Mozart clearly enjoyed good health throughout his twenties and early thirties.

triangular flag，pennant，burgee ；

[例句] 它们的鬃毛直立起来,在风中就像一面面硬硬的黑色三角旗. Their manes streamed like stiff black pennants in the wind.

[例句] 他那矛枪上扎着一面小三角旗, 在强劲的东风中飘动. A small pennon, flag, or streamer borne on a lance.

sandwich ；

[例句] 她点了份火鸡三明治，以此来避开这个重要问题。 She avoided the issue by ordering a turkey sandwich.

[例句] 在热闹广场的另一边，摊贩叫卖着热狗和羊角三明治。 Across the busy plaza, vendors sell hot dogs and croissant sandwiches.

ternary，three-ply，[机] triple，threefold，tripartite ；

[例句] 如果你正在阅读这个网页, 表示你得到了三重的幸福. If you can read this site, that means you are thrice - blessed.

[例句] 我们已经指出, 这祝福乃是三重的,就是恩 、 爱与交通的祝福. As we have pointed out, this blessing threefold a blessing of grace, love, and fellowship.