Etheride
酰鹵化物
??? 情景例句
I have been talking to a group of salesmen
我一直在與一群推銷人員談話
I hope you can help me.
我希望你能幫助我。
You can imagine how useful this is, particularly in countries like China and Japan, which use written characters not letters.
你可以想像得到，特別是在中國和日本這些使用文字而不是字母的國家，這是多么有用處！