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。

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.

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摘要当外国轮船越过了重重险滩，进入了长江上游，与四川当地的中国舢舨船之间，会发生何种关系？

When the foreign steamers surpassed the multiple rapids and entered the upper Yangtze River, what would happen between the steamers and the local junks?

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最后，又一只船载我们走同一的危险航道到了四川。

Eventually, another boat took us up that same menacing route to Szechuan province.

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