监狱只好拼命往里面塞犯人。Prisons are having to pack in as many inmates as possible.他们别无选择，只好接受他的提议。They had little choice but to agree to what he suggested.我喝醉了，只好让人把我送回家。I got drunk and had to be carried home....
It'snows in winter so I can make a snowman.冬天下雪,所以我可以堆雪人.We can make a snowman on a snowy day.在下雪天,我们可以堆雪人.Because I like to play in the snow and make a snowman.因为我喜欢在雪地里玩耍和堆雪人....
...a billionth of a second.十亿分之一秒UNIT NINETEENA nanometer is one billionth of a meter ( 3~4 atoms wide 2 ).一纳米即十亿分之一米 ( 可以排列三四个原子 ).The centimeter - gram - second electromagnetic unit of inductance, equal to one billiont...