例句 /

Crews cover the middle 1000 metres at about 40 strokes per minute, but, over the first and last 500 metres, shift up a gear to as many as 47.

Crews cover the middle 1000 metres at about 40 strokes per minute, but, over the first and last 500 metres, shift up a gear to as many as 47.

在赛程中段的10000米,队员们每分钟要划桨40下,而在前段和后段的两个500米中,划桨的频率要加快到每分钟47下。