He flopped into water.
他扑通一声跳入水中。
The travellers were so tired that they flopped into bed and fell asleep at once.
旅行者们太累了,一头倒在床上就进入了梦乡。
英汉双解词典包含483723条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。