Dendrobine
石斛碱
🗣️ 情景例句
I'll pick you up.
我去接你。
I would like to call a plumber to come this afternoon.
我要叫一个水管工人今天下午来。
He had been obliged to join the army during the Second World War.
年龄比他两个弟弟大很多，第二次世界大战期间被迫参军。