Knickpoint
n. [地]裂點,尼克點(指河流縱剖面上坡度的突變點)
??? 情景例句
I hear what you're saying.
我明白你的意思。
Can you guess what I was doing this morning?
你能猜到今天上午我在做什么嗎？
Those are watermelons.
那些是西瓜。