加入

to become a member / to join / to mix into / to participate in / to add in

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) / Canada (abbr. for 加拿大[Jia1 na2 da4]) / surname Jia

to enter / to go into / to join / to become a member of / to confirm or agree with / abbr. for 入聲|入声[ru4 sheng1]