- ask sb. for sth.问某人 为了某事。
- be charged withv.承担，被控告;
- be centred around以中心为中心
- be carefuln.注意;当心，小心;
- be bound up inv.热心于;
- be beneathn.不值得;
- be my guest<非正>请（自）便;
- be made in在…地方制造；在…生产或制造;
- be loyal to忠于…;尽忠;
- be late误卯；迟到；姗姗来迟;
- be in need ofv.需要;
- be in line排成一行;成直线;符合;依照;
- be free from免于…;
- be famous for因…而著名;
- be familiar withv.熟悉;认识;
- be exempt from被免除于;
- be tired ofv.厌烦;腻;倦;
- be thankful to感谢（某人）;
- be stripped of被剥夺
- be sick恶心，呕吐;
- 双语例句
1、
Chromium has long been known to be essential for proper lipid and carbohydrate metabolism in mammals.
铬长期被认为是在哺乳动物体内相应的脂类和碳水化合物代谢所必需的.
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