tf 签名

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

常见

cháng jiàn commonly seen; common; to see sth frequently

稳定性

wěn dìng xìng stability

问题

wèn tí question; problem; issue; topic; CL:個|个[ge4]

电报

diàn bào telegram; cable; telegraph; CL:封[feng1],份[fen4]

找

zhǎo to try to find; to look for; to call on sb; to find; to seek; to return; to give change

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