If you check these characters first, you can filter out a lot of the chaff and save time by parsing only the most likely candidates.

通过首先检查这些特征，就可以过滤掉大量不合要求的内容，仅处理最有可能的文档，从而节约了时间。

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Remove the oil filter cap and add engine oil a little at a time, check the dipstick.

拧下机油加油口盖并一次加少量机油，检查量油尺。

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Remove the oil filter cap and add engine oil a little at a time, check the dipstick.

拧下机油加油口盖并一次加少量机油，检查量油尺。

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