地壳的形成保护了地球的内层不受太空中高能粒子的影响，降低了地幔和地核的温度。
The formation of Earth's crust protected the inner layers of Earth from the high-energy particles in space, reducing the temperatures of the mantle and the core.
当这些带电粒子接近地球时，便形成一个很强的磁场区--磁气圈--包围着地球并对地球起一定的保护作用。
When the charged electrical particles approach the Earth, they carve out a highly magnetized region —the magnetosphere —which surrounds and protects the Earth.
预先过滤的主要作用是截获部分尺寸过大的粒子，并保护最终过滤不被过早的堵塞，以便提供过滤器最大的使用寿命。
The major role of pre-filtration is to capture a portion of the oversized particles and protect the final filtration from premature plugging in order to deliver maximum filter service life.
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