9. The encounter with Laura was eclipsed by tragedy when Mark Twain's younger brother, Henry, died at age 19 in a riverboat explosion on June 21, 1858.
马克·吐温的弟弟亨利在1858年6月1日轮船爆炸的悲剧中死亡，与劳拉相遇的喜悦随之烟消云散。
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10. It may not entirely be a coincidence when in the afternoon we get in our speedy riverboat (it's a bit like a wide minibus) and visit some husky kennels upriver.
所以，我们下午的活动看来不完全是偶然的：乘有点像小巴的交通船去参观爱斯基摩犬的狗舍。
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11. He worked as a printer, riverboat pilot, reporter, lecturer, and literary man, and he lived in just about every kind of population center, from farms, small towns, and mining camps to great cities.
12. He worked as a printer, riverboat pilot, reporter, lecturer, and literary man, and he lived in just about every kind of population center, from farms, small towns, and mining camps to great cities.
