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- 铅的测定只适用于塑料辅料;镉的测定适用于塑料辅料和电镀金属部件,且电镀金属部件上不得检测出含有镉。Pb for plastic accessories only; Cd for plastic accessories and plated metal parts; while the limit value for Cd in plated metals should be non detectable.
- 教猴子上得树,教狗上不得树It is easier to teach one with a natural aptitude for the subject Being taught, than one for whom the teaching are inept
- 唯一具体的规定是矿上不得雇用妇女。The only specification was that the women should be unemployed in the mine.
- 除夕时没有约会是社交上不受欢迎,而且缺乏性魅力的铁证。Being dateless on New Year's Eve is proof positive of a person's social and sexual undesirability.
- 你在课堂上不得吸烟。You are forbidden to smoke in class.
- "如果得不到更多的资金,我们就不得不关闭所有的分支办事处。""Unless we get more finance, we'll have to close the branch offices."
- 这个一时也不会安静的孩子在椅子上不停地摇动。The restless child wiggled in his chair.
- 我们一路上不得不与大风搏斗。We had to struggle against strong winds all the way.
- 由于下雨了,场地上不能做体育活动。Owing to the rain the ground was not fit to play on.
- 他15岁时就不得不挣钱养活自己了。He had to earn his keep at the age of15.
- 心理上或生理上不正常地依赖某东西。being abnormally dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs).
- 在这一点上不得有错。Let there be no mistake about it.
- 守寡使她不得不过着孤独的晚年生活。Her widowhood condemns her to a lonely old age.
- 没有带电的中子则在化学反应上不会扮演甚么重要角色。The neutron, which is neutral, does not play an active role in chemical reactions.
- 国会山不断打来电话,劝我在武器供应问题上不要裹足不前。Telephone calls descended on me from Capitol Hill urging me to stop dragging my feet on arms supply.
- 起初他本打算自己修车,可最后他还是不得不请人帮忙。He started out to fix the car himself, but in the end, he had to ask for help.
- 那个城市佬在农场里是如鱼离水,不得其所。That city slicker was out of his element out on the farm.
- 他丢失了手提箱,不得不向汤姆借睡衣。He had lost his case and had to borrow Tom's pyjamas.
- 她不得不从早到晚奔忙以求养家糊口。She had to scratch gravel from morning till nigh to support the family.
- 游泳者忽然抽筋,因而不得不由他人救助出水。The swimmer was seized with cramp and had to be helped out of the water.