AWSAmazon 代

dài to substitute; to act on behalf of others; to replace; generation; dynasty; age; period; (historical) era; (geological) eon

付

fù to pay; to hand over to; classifier for pairs or sets of things

Fù surname Fu

常

cháng always; ever; often; frequently; common; general; constant

Cháng surname Chang

安全性

ān quán xìng security; safety

TG:@tfzhihu 代

dài to substitute; to act on behalf of others; to replace; generation; dynasty; age; period; (historical) era; (geological) eon

ezu