/ əˈsɪm.ə.leɪt / verb
to become part of a group, country, society, etc., or to make someone or something become part of a group, country, society, etc.
The European Union should remain flexible enough to assimilate more countries quickly. 歐盟應該保持足夠的靈活性,以加快步伐吸收更多的國家為其成員。
assimilation

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/ əˈsɪm.ə.lə.b ə l / adjective
that can be absorbed into the tissue of a living organism:
assimilable carbon 同化碳
assimilable

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/ ˌæn.taɪ.ə.sɪm.əˈleɪ.ʃ ə n / adjective
not wanting or allowing people from minorities to be accepted as part of a country or society:
This argument is, in fact, a form of anti-assimilation rhetoric. 事實上,這種說法是一種反同化言論。

( 同化 Cambridge Chinese (Traditional)-English Dictionary 的翻译 © Cambridge University Press)

to put your arms around someone and hold them in a loving way, or (of two people) to hold each other close to show love or for comfort