四种基本力(重力，电磁力，强作用力和弱作用力)都有一个理论把手，调节这东西可以改变力的强度。

Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob that can be turned up or down to change its strength.

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但天文学家们认为下一次的太阳活动强度的上升要弱于往常，甚至有可能完全不会发生。

But astronomers think the next upswing will be less intensive than normal, or could fail to happen at all.

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越向左边拖动滑条，滤镜效果的强度就会越弱。

The farther you drag, the less the intensity of the effect.

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