123app 签名

qiān míng to sign (one's name with a pen etc); to autograph; signature

充值

chōng zhí to recharge (money onto a card)

唯一

wéi yī only; sole

购买

gòu mǎi to purchase; to buy

联系

lián xì connection; contact; relation; to get in touch with; to integrate; to link; to touch

lián xì variant of 聯繫|联系[lian2 xi4]

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