代

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

充

chōng to fill; to satisfy; to fulfill; to act in place of; substitute; sufficient; full

加

jiā to add; plus; (used after an adverb such as 不, 大, 稍 etc, and before a disyllabic verb, to indicate that the action of the verb is applied to sth or sb previously mentioned); to apply (restrictions etc) to (sb); to give (support, consideration etc) to (sth)

Jiā abbr. for Canada 加拿大[Jia1 na2 da4]; surname Jia

elephantsign0 信

xìn letter; mail; CL:封[feng1]; to trust; to believe; to profess faith in; truthful; confidence; trust; at will; at random

合作

hé zuò to cooperate; to collaborate; to work together; cooperation; CL:個|个[ge4]

jem