Having a successful push off in backstroke means being able to stay under water long enough to take advantage of your underwater dolphin.

有一个成功的推在仰泳意味着能够在水下停留足够长的时间，利用你的水下海豚。

youdao

DOES the Yangtze River still have baiji, the graceful, grey dolphin with tiny eyes and a long narrow beak?

那种长着小眼睛和尖长嘴、姿态优雅的灰色海豚——白暨豚，在长江里还有吗？

youdao

At birth, a bottlenose dolphin calf is about 90 to 130 centimetres long.

出生时，一个宽吻海豚幼崽有90到130厘米长。

youdao

The federal requirements for dolphin-safe labeling do not exclude tuna that were caught while killing dolphins as long as it was not done using one particular method in one particular part of the ocean.

FORBES: WTO Correctly Calls The U.S. To Task For Lying About Dolphins