porpoises例句

A shoal of porpoises are well on the feed.
一群海豚正在吞食.

In 1928 some porpoises were photographed working like beavers to push ashore a waterlogged mattress.
1928年有人把这些海豚象海狸那样把一床浸泡了水的褥垫推上岸时的情景拍摄了下来.

There has long been a superstition among mariners that porpoises will save drowning.
长久以来,海员们有一种迷信,那就是海豚会把很快要淹死的人推到水面使之获救.