Because gravity is in this direction.
因为重力是这个方向的。
Because gravity is the only force that does work.
因为重力是，唯一作用的力。
It should make no difference because gravity is a conservative force.
这没有区别,因为重力恒定。
Mechanical energy is conserved, because gravity is a conservative force.
机械能是守恒的，因为重力是守恒力。
But you cannot simply walk here because gravity is always in this direction.
没有楼梯是行不通的，因为重力总保持这个方向。
Because there is a law such as gravity, the Universe can and will create itself from nothing.
因为存在着一种定律，比如重力定律，宇宙可以也将能够自己产生。
That's because of the tremendous gravity that you have exposed them to.
这是由其产生的,巨大重力造成的。
That's very difficult to do that, because of gravity.
因为有重力存在。
The earth is round because of gravity.
地球是由于重力而成为球形的。
Falling in love, not because of gravity.
坠入爱河，不是因为万有引力。
It's because we leave the pull of gravity that comes from the earth.
这是因为我们离开了来自地球的地心引力的拉力。
The earth is round because of gravity .
地球是由于重力而成为球形的。
Love is gravity, because it makes some people feel attracted to others.
爱可以是重力，因为它产生了一种吸引力。
Only because they aren't big enough for gravity to be a determining factor.
因为他们不够大，所以重力并不是决定性因素。
And because there is no gravity we must use towels to wipe off the sweat.
因为没有重力所以我们必须用毛巾把汗擦去。
And because there is no gravity we must use towels to wipe off the sweat.
因为没有重力所以我们必须用毛巾把汗擦去。
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