I also had to exert a mild mental push against gravity if I wanted to keep an object moving in a straight horizontal line; otherwise it would sink vertically.
同时如果我想让一个物体平移，我还要克服重力的作用，否则它就会垂直下沉。
Then, whenever you open a hot water valve in your house, such as a sink or shower, then it will gravity feed.
这样，只要我们在任何时候打开房间内浴缸或的淋浴喷头的热水出水阀，热水器的水箱就能在地球引力的作用下自动添水。
When they are too high they sag under the stars' gravity and sink back into the ground.
当它们太高的时候，就会在中子星的引力作用下下坠，重新陷入地面。
With high stability, small specific gravity, difficult sink, the turbidity formed by alga mainly consists of organic compound.
稳定性高、比重小、困难的接收器，主要由海藻浊度由有机物组成。
With high stability, small specific gravity, difficult sink, the turbidity formed by alga mainly consists of organic compound.
稳定性高、比重小、困难的接收器，主要由海藻浊度由有机物组成。
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