before的近义词有：ago, before,before, in front of, in the front of。下面这两个副词均含"……以前"的含义：ago ：指从现在起往前推算一段时间，始终置于所修饰的词之后，与一般过去时连用。before ：或指从过去某一时间起向前推算的若干时间的以前，通常与过去完成时连用；或泛指以前，并不具体指若干时间以前，可使用现在完成的或过去时；还可指从将来某一时间起的若干时间以前。下面这些前置词(...
解决了最初的一些问题之后，终于成功地制造出了大量丙酮。After some initial problems, acetone was successfully produced in quantity.这两个氨基酸从丙酮酸获得它们的碳架.These two amino acids derive their carbon skeletons from pyruvate.将乙酰丙酮铁, 苯基B- 萘胺及磷脂通过40目筛加入.The fer...
这是一片茂密森林, 原始树林和美丽湖泊遍布的地区.This is an area of thick forests, ancient trees, and beautiful lakes.这些条目必须含盖系统中遍布的所有可能的数据.These entries are to cover all possible dataconstellations in the system.它盘垣于弯曲的峡谷之间, 攀上陡峭的山峰, 从岩石遍布的峭壁俯...
Walruses have enormous appetites and hunt for food almost constantly.海象食欲极大,几乎一直在猎取食物.I normally eat seals but also can dine on walruses, mussels or even berries and seaweed.我通常吃海豹,但也能吃海象, 蚌类,甚至是浆果和海藻....
Rust and flaking paint mean the metalwork is in poor condition.生锈和掉漆说明金属配件损毁严重。Ray painted below the waterline with a special anti-rust paint.雷用专门的防锈涂料涂船的吃水线以下的部位。Alkali neutralizer powder, but also can be used as dechlo...