纸

zhǐ paper; CL:張|张[zhang1],沓[da2]; classifier for documents, letter etc

zhǐ variant of 紙|纸[zhi3]

飞机

fēi jī airplane; CL:架[jia4]

担保

dān bǎo to guarantee; to vouch for

群

qún group; crowd; flock, herd, pack etc

qún variant of 群[qun2]

哪个

nǎ ge which; who

可靠

kě kào reliable

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