Retrogradation
n. 逆行, 退化, 倒退\\n[機] 退減作用
? 同義詞
?? 反義詞
??? 情景例句
I'll see you all at dinnertime.
吃晚飯時見面了。
Hang up one's hat in another's house.
在別人家里久留不去，長期居住。
The reason lies in its gravity.
其原因在于月球的重力。