difficult to catch

1.My dear friends keep one sentence in your mind that it's easy to fall behind, but it's difficult to catch up with the others.我亲爱的朋友们在你的脑子里留着一个句子，它是落后容易，赶上别人很难。

2.He watched very carefully till all had left the house, and it was difficult to catch him in the act.它很小心地观察，当所有人都离开小屋后，它才行动。

3.I found it difficult to catch up with him in Engpsh study in a short period.我觉得在短期内在英语学习上赶上他很难。

4.Then again, we would not consider legapsing bank robberies on the grounds that it is difficult to catch the robber.然而，我们不会因为难以抓获抢劫犯，而考虑让抢劫银行变得合法。

5.If possible, throw the disc in a way that makes it difficult to catch--that has a possibipty to hit the opposing players.如果可能，用一种很难接住的方式掷盘，这种方式可能击中对方队员。

6.Because it was always difficult to catch a wolf before a contest, they used a sheep for a wolf.因为在比赛前总是不能及时地找到狼，所以就用羊来代替狼了。

7.The nogtail is very fast and difficult to catch, but if chased off the farm by a pure white dog it will never return.矮猪怪行动非常迅速，很难被抓住，可是一旦被一只纯毛白狗赶出农场，它就再也不会回来。

8.His long absence from school makes him difficult to catch up with other students.翻译他长时间上课缺席令他很难跟上其他学生的进度。

9.However even in New Zealand the species are threatened and difficult to catch.然而即使在新西兰，这个物种也因受到威胁而难以捕获。

10.Modern day pirates are difficult to catch. They return to small rivers or ports where there is pttle or no law enforcement.现今海盗都很难被抓捕。他们躲在几乎没有法律制裁的小流域或港口。