Cassythidine
无根藤次碱
🗣️ 情景例句
When you feel your life is threatened, just dial 999 to get help.
当你的生命受到威胁的时候，拨打 999 求救。
Dad is building another room onto the back the house.
爸爸另外在屋子的后面盖一个房间。
No, I'm afraid I'm not.
不，恐怕我来不了了。