Alkynyl
炔基
🗣️ 情景例句
She went to a school-board meeting.
她去参加联合校董会的会议。
Beggars must be no choosers.
饥不择食。
'No, not at all,' I answered.'I'm going to. '
“不，不忙，我打算去。。。。。。”我回答。