early 15c., from Old French complaignant, present participle of complaindre (see complain). The present participle also was used as a noun in Middle French.
权威例句
1. The complainant accused the defendant of cheating him.
原告控诉被告欺诈他.
2. The complainant has been exposed to public odium, scandal and contempt.
原告遭到了公众的憎恨、非议与蔑视。
3. Copy of this letter is sent to the Complainant.
这个邮件的复印件已经发给了原告.
4. The burden of proof in each case shall be on the complainant.
在每种情况下均应由投诉者负责提供证据.
5. The burden of proving the validity of the protest lies with complainant.