Allylation
烯丙基化
🗣️ 情景例句
Get to the heart of the matter.
请讲问题的实质。
A true friend is known in the day of adversity.
疾风知劲草，患难知友情。
but it suddenly caught sight of the drunk who was shouting rude remarks and waving a red cap.
但突然它看见了醉汉，只见他正大声说着粗鲁的话，手里挥动着一顶红帽子。