Phthalazinyl
[化] 2,3-二氮杂萘基
🗣️ 情景例句
Are we scheduled to leave on time?
飞机准时起飞吗？
It is one thing to speak much and another to speak pertinently.
话讲得多是一回事，讲得恰当是另一回事。
Instead he bought himself fifty pence worth of trouble.
却拿这钱给自己买了50便士的麻烦。