go for a dip
美
英 
例句
"People think they are just swimming in water when they go for a dip in the sea, " he said. "In fact, they are bathing in a plankton soup. "
他說:“人們以為他們去海里泡一泡僅僅是游泳而已,事實上,他們是在一大鍋浮游生物湯里洗澡。”
Let's go for a dip in the sea after school, shall we?
我們放學以后去海邊游泳好嗎?