第二次循环在行上进行。

The second loop is done over the rows.

youdao

迷宫式磨损环使低温液体二次循环损失减到最小。

LABYRINTH WEAR RINGS-Minimize recirculation losses of cryogenic liquids.

youdao

改造后二次循环水泵的节电效率高达35%，节能效果十分显著。

The reformation effect is notable and the rate of power saving is over 35%.

youdao

So first time through the loop, the answer is a. Second time it-sorry, as it enters the loop, at the time it enter exits a the answer is a.

当第一次完成循环的时候，答案是a，第二次，对不起，在第一次进入循环的时候,答案就是。

麻省理工公开课 - 计算机科学及编程导论课程节选