firm，secure，fast，solid，fastness ；

[例句] 他们互相关心，关系牢固，这才熬过了艰难岁月。 The warmth and strength of their relationship carried them through difficult times.

[例句] 总有一天，生活会考验这种关系是否牢固。 Sooner or later, life will put the relationship to the test.

keep firmly in mind，remember well，learn by heart，bear in mind，fix ；

[例句] 要时刻牢记把所有文件都备份。 Always keep a copy of everything in your own files.

[例句] 我将牢记你的忠告. I'll bear your advice in mind.

complaint，grievance，discontent，complain，grouse ；

[例句] 他们一直在倾听人们的牢骚、抱怨和表扬。 They have been listening to people's gripes, moans and praise.

[例句] 这些不过是发发小牢骚罢了。 These are minor quibbles.

（鸟兽笼） cage，（比喻束缚人的事物） bonds，trap，snare ；

[例句] 汤姆不喜欢上学, 学校对他来说好像是个牢笼. Tom hates school; it's a prison to him.

[例句] 因为他残废了, 他的房子就成了他的牢笼. Now that he was disabled, his house had become a prison to him.

prison，jail，bagnio，bridewell ；

[例句] 牢狱生活让他变得残忍粗暴。 He was brutalized by the experience of being in prison.

[例句] 波拉德继续受牢狱之苦。 Pollard continues to languish in prison.

[口] prison，jail，bridewell，jug，stir ；

[例句] 那家诊所令人感觉像四面环水的监牢，无路可逃。 The clinic felt like Alcatraz. There was no escape.

[例句] 法官因他盗用公款将其送入监牢。 The judge sent him to prison for embezzlement of funds.

skookum-house，cell，ward；

[例句] 他和其他10名犯人被囚禁在一间狭窄的牢房里。 He is cooped up in a cramped cell with 10 other inmates.

[例句] 狱吏冲进牢房把他吊死了。 Guards rushed into his cell and strung him up.

stickfast，clinch，clench，nail down，nail up ；

[例句] 屋顶板条一直没钉牢。 The roof was never securely battened down.

[例句] 请把那块松动的地板钉牢好 吗 ? Will you nail down that loose board in the floor?

[体]clinch ；

[例句] 绳子没系牢. The rope hasn't been tied fast.

[例句] 晾衣绳被拉紧并系牢。 The clothes line is pulled taut and secured.

dungeon，pit，cachot ；

[例句] 约翰让人将莫德和她的儿子关进了地牢。 John had Maude and her son cast into a dungeon.

[例句] 把他扔进地牢,让他呆在那儿. Throw him into the dungeon and leave him there.

anchor-hold，cinch，fist ；

[例句] 你坐在你哥哥的摩托车后面时,要抓牢. Hold tight when you ride at the back of your brother's scooter.

[例句] 我拼命地抓牢树枝. I clung onto the branch for my life.

firm，secure，[法] strong，deep-set，locked-in ；

[例句] 情感冲突可以动摇哪怕是最牢固的人际关系的基础。 Emotional conflict may shake the foundations of even the strongest relationship.

[例句] 黏土和砂岩都是不牢固的岩石构造。 Both clay and sandstone are unstable rock formations.

hard ；

[例句] 这房子是用粗木板牢固地建造的. The house was built solidly of rough wooden planks.

[例句] 把碎片牢固地粘在一起. Glue the pieces firmly together.

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[例句] 总是那一类的牢骚话,没完没了. The complaints continued in the same vein.

[例句] 我从未听过他说一句牢骚话. I haven't heard a peep out of him.

cement ；

[例句] 一定要把邮票在信封上粘牢. Make sure the stamp is properly glued to the envelop.

[例句] 棉织品有良好的粘结性能,任何一种粘结剂均可达到粘牢的效果. Cotton fabrics have good adhesion any binder can achieve unstuck.

weld ；

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