Knickpoint
n. [地]裂点,尼克点(指河流纵剖面上坡度的突变点)
🗣️ 情景例句
You speak English without an accent.
你说英语一点口音也没有。
How fast?
多快？
'I'm trying to repair the bell,' answered Bill.
“我想把这口钟修好，”比尔回答说。