remediationn.
英 rɪ,miːdɪ'eɪʃ(ə)n | 美 rɪ,midɪ'eʃən
中文n. 补救；矫正；补习
词根词源
remediation (n.)1818, noun of action from stem of Latin remediare, from span class="foreign">remedium (see remedy (n.)). In educational jargon from c. 1975.
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