Areopyknometer
[機(jī)] 比重瓶比重計(jì)
??? 情景例句
Food is necessary to maintain life.
食物是維持生命所必須的。
Because such constructive employment practices will greatly promote a better understanding of both American and Chinese cultures.
因?yàn)檫@個(gè)具有建設(shè)性的雇傭體系將會有力地推進(jìn)對中美雙方文化的更好了解。
If then we are so certain that other intelligent life exists in the universe,
既然我們?nèi)绱藞?jiān)信宇宙中存在著其他有智力的生命，