Gem-dinitro compound
[化] 偕二硝基化合物
🧩 词语组成解析
gem
[dʒem]
n. 宝石，珍宝;精华，佳作;受人重视者;[印]四点活字;
v. 点缀;用宝石装饰;饰以宝石;
adj. 最佳品质的;
地乐酚
🗣️ 情景例句
and wait until you're ready to go back to work.
而且会等你准备好了才回去工作。
I will have done it by the time you come back.
在你回来之前，我会做完它。[将来完成时，表示将完成…，会做完…]
Both the police and the workmen were grateful to the student for this piece of advance information.
警察与工人都对那个学生事先通报情况表示感谢。