After dialysis helped his kidneys recover, it was time to attack the cancer, and in February 2009 he underwent chemotherapy and a stem cell transplant.

当透析使他的肾功能恢复正常后，他开始对抗癌症，并且在2009年的2月他去做了化疗和干细胞移植。

youdao

"I was waiting for the time to attack Vettel - maybe the last 10 laps - but suddenly he had a car problem and we had a chance to overtake him earlier than we expected, " Alonso said.

阿隆索说：“我此前一直在等待时机对维特尔发起攻击-也许可能要等到最后10圈，但是突然他的车子出现了问题，所以我能在比预期更早的时候找到机会超过他。”

youdao

By this time, word of Brown's attack had spread to Charles Town, more than twelve kilometers away.

VOA: special.2009.06.25

So how would we go about solving this problem if I told you not only was there a maximum weight, but there was a maximum volume. Well, we want to go back and attack it exactly the way we attacked it the first time, which was write some mathematical formulas.

有些时候两个都重要,所以如果我告诉你这里不仅有,最大重量还有最大容量，我们应该怎么解决这个问题呢？,好了，我们想回过来然后,和第一次一样看看这个问题。

麻省理工公开课 - 计算机科学及编程导论课程节选

Mr.Obama's comments marked the second time in two days that he interrupted his vacation in Hawaii to talk about the attempted attack.

VOA: standard.2009.12.29

It is sometimes the best time to attack when the opposition have been putting you under pressure for a number of phases.

BBC: Clive Stuart-Smith column

But he is noticeably absent from the small battalion of London Labour left-wingers turned loyal Blairites prominent in the city's politics during the 80s but who have since recanted many of their activities of the time to attack their onetime comrade Livingstone.

BBC: Ambassador Banks

We've got the World Cup coming up and I'd hate to see guys go into their shells but it's decision-making - when is the right time to attack and the right time to defend - and we haven't done that well enough.

BBC: Strauss angry after England lose series to Australia