The US Coast Guard has sent out several rescue teams, including an aircraft and two ships, to search for him but has had no luck yet.
美国海岸警卫队派出了数只救援队寻找郭川，其中包括一架飞机和两艘救援船，不幸的是至今仍未发现其下落。
There is no concern that he might be down on his luck. Such an incident will never happen to him.
不必担心他会倒霉。这种事情觉不会发生在他身上。
Ambition and a little luck are good things for a writer to have going for him. Too much ambition and bad luck, or no luck at all, can be killing.
野心和一点运气对一个作家是有帮助的，但野心太大又碰上运气不好的话，会把一个作家置于死地。
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