"plunk down" in Chinese (Simplified)
放下（为某事）付钱
Definition
随意地放下某物，通常伴有声响，或支付一笔钱（尤其是一大笔或显眼的金额）。
Usage Notes (Chinese (Simplified))
非正式，主要用于美式英语。描述随意、常带响声地放下物体，或强调支付一笔（较大）金额。不要与中性“put down”或只指付钱的“shell out”混淆。
Examples
He plunked down his backpack on the floor.
他把背包**放下**在地上。
I plunked down $50 for those shoes.
我为那双鞋**付了**50美元。
She plunked down on the couch after work.
她下班后**一屁股坐**在沙发上。
We all plunked down our keys as soon as we got in.
一进门，我们都把钥匙**随手放下**。
He just plunked down a stack of bills and bought the car.
他直接**放下一叠钞票**，就买了那辆车。
Whenever I visit, Grandpa plunks down in his favorite chair with a sigh.
每次我去，爷爷总是**重重地坐进**他最爱的椅子里叹口气。