那一边是光滑的石头台阶，似乎这条通道已经存在了许多年。
There were smooth stone steps on the other side: It looked as though the passageway had been there for years.
冷却通道与光滑的内护套之间用弹性元件紧紧地密封起来。
The cooling channels are sealed most effectively against the smooth inner jacket by elastic elements.
木质船身的观察者号，在二战时期曾作为扫雷艇服役，如今被改装成一艘可容纳12名乘客的游览艇，在阿拉斯加内海通道的光滑如镜的水面上滑过。
Observer, a wooden-hulled, World War II-era minesweeper that has been converted to a 12-passenger cruising yacht, glides through glassy water in Alaska's Inside Passage.
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