We drove there and back on one tank of petrol.
我们开车去那里来回用了一油箱汽油。
Water flows from the tank to the washing machine to clean clothes, then back through a filter and into the tank to be cleaned and used again.
水从水槽流到清洗机清洗衣物，然后通过过滤系统流回水槽再次利用。
We walked to an outdoor pavilion with a large tank in the back. By leaning over the side, I could see that the cistern was full of carp - thick, oily, 2-ft.
我们走到一个亭子里，亭子后面有个大池子，我站着池边，斜着身子，看见池子里满是鲤鱼——这些鱼都是直接从底格里斯河捕上来的，又大又肥，身长有70 cm。
When the water heater is working correctly, water will flow from the storage tank to the collector and back again.
VOA: special.2009.04.20
Media Relations Director Jeffrey Hiday says the term "think tank" dates back to that time.
VOA: special.2010.09.27
"As a kid,when I first put a tank on my back, I was seven years of age.
VOA: standard.2010.06.18
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