Alstonia constricta
[医] 澳洲鸡骨常山
🧩 词语组成解析
夹竹桃属; 鸡骨常山属
🗣️ 情景例句
We were all sorry when we heard that your brother had had an accident.
我对你弟弟的意外感到遗憾。
Excuse me I couldn't tell you beforehand.
对不起我不能事先告诉你。
I've been working so hard recently that I haven't had any time for collecting new stamps.
最近我的学习一直很紧张，没有时间收集新邮票。