underwater swimming

基本解释

Some drills may do with the underwater swimming, maybe three pulls and a kick.
我们可以做一些水下的蛙泳，也许是三次划水一次蹬腿。
hnlm.net
Gentoos are the fastest underwater swimming birds and can reach speeds of 22 miles an hour (36 kilometers an hour).
巴布亚企鹅是水下游泳最快的禽类，可以达到22英里/小时（36公里/小时）的速度。
He broke his record for underwater swimming and was around the bend and out of sight while the congregation stood stunned and speechless on the shore.
他打破了自己潜泳的纪录，在教众们站在沙滩感到吃惊和无语时，他已经疯狂地游到众人看不到的地方去了。

The house had grown disturbed—doors pestering at their frames whenever the weather drew breath, clatters on the roof, something twisting, searching overhead, and meanwhile she dreamed a little of being underwater, swimming the length of an obstacle course, both a game and an obstacle course, in some kind of terrible amusement park.
NEWYORKER: Wasps
Always swimming underwater, the black waves of her hair flowing behind her like a school of eels.
NEWYORKER: Miss Lora
The results, which will be reported in a forthcoming issue of Functional Ecology, suggest that echelon swimming is the underwater equivalent to carrying a child.
ECONOMIST: Another reason why infant dolphins need their mothers