Matricarin
[化] 母菊苷; 母菊内酯
🗣️ 情景例句
That's not it.
不是这种事。
I'm going to show him how to swim.
我正要指点他如何游泳。
But instruments far more delicate than that were needed if any really serious advance was to be made.
但是，如果要取得真正重大的进展，需要有比这种装置精细得多的仪器。