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The routes plied by these ships provide clues to the strength of the world 's big economies .

这些船舶经常往来的航线为揭示世界各大经济体的实力提供了线索。

Of course , the silk road was plied by only a small group of hardy traders .

当然，丝绸之路是只是一小群勤劳的商人们经营起来的。

Two of three cruise ships that had plied hawaii 's waters also ceased operating there , he said .

他说，此前夏威夷水域的三条邮轮航线中有两条也停止了运营。

Several ambulances plied to and from the site , but the officialmedia have reported the rescue of only 50 or so children .

许多救护车来来往往，但是官方媒体报道只救出了差不多50个孩子。

Curious one day , I plied the younger one ( eight years old ) with a little quiz as we walked to the park with my son .

有天我和儿子与他们一起走路去公园，出于好奇，我就对其中一个8岁的孩子（较小的那个）做了个小测试。