Dubnium
n. 钅杜（第105号元素）▽
🗣️ 情景例句
I am unfamiliar with law.
我对法律不熟悉。
All work and no play make Jack a dull boy.
尽量学，尽情玩。
I argued that if I spent less time exhausting myself at exercises in the morning,
我辩解说，早晨少耗费精力锻炼，