Water Seal Gate Valves 水封闸阀 ; 水封 ; 学习生产水封闸阀 ; 水启闸阀
Water Seal Test 水密封试验 ; 气密封试验 ; 水 ; 密封试管
water seal tank [油脂] 水封池 ; 水封槽 ; 水封箱 ; 水封罐
Water seal cage [机] 水封环
water seal ring 水封环
water-seal 水封 ; 止水
deck water seal 甲板水封
Only drink bottled water and check the seal isn't broken.
只喝瓶装水，并且要看封口开了没有。
In the laboratory, when the seal dives below the surface of the water and stops breathing, its heart beats more slowly, requiring less oxygen, and its arteries become constricted.
在实验室里，当海豹潜入到水面以下并停止呼吸时，它的心脏跳动得更慢，需要的氧气更少，动脉也会收缩。
A seal popped out of the water below the ship and greeted them on the last day of their stay.
在他们停留的最后一天，一只海豹突然从船下的水中跳出来迎接他们。
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