Monoprop
丙酸
🗣️ 情景例句
One of the critics is coming over this morning for a preview.
一位评论家今天早上要来看预展。
Do not praise a day before sunset.
切勿褒贬过早。
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。