搜索

sōu suǒ to search (a place); to search (a database etc)

留

liú to leave (a message etc); to retain; to stay; to remain; to keep; to preserve

liú old variant of 留[liu2]

liú old variant of 留[liu2]

痕

hén scar; traces

工具

gōng jù tool; instrument; utensil; means (to achieve a goal etc)

怎么

zěn me how?; what?; why?

zěn me variant of 怎麼|怎么[zen3 me5]

用

yòng to use; to employ; to have to; to eat or drink; expense or outlay; usefulness; hence; therefore

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