Mucunine
油麻藤碱
🗣️ 情景例句
I'm afraid the cardboard boxes are not strong enough for transport by sea.
我担心这种纸箱，用于远洋运输，不够结实。
He has a letter.
他有一封信。
Not far. My house is about twenty minutes by bike.
离的不远，骑自行车大约20分钟的路程。