Fluid design, in the cover of the battery set a one-way valve.

液设计，在电池的上盖中设置了一个单向的安全阀。

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Could you check the battery (brake fluid)?

你能检查一下电池(刹车油)？

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Could you check the battery (brake fluid)?

你能检查一下电池(刹车油)？

youdao