His opening remarks were serious.
他的开场白说得很严肃。
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📚 句中词汇解析
从本句中提取的重要词汇
n. 开幕，开始;空缺的职位;[商]开盘，交易开始时间;（职位的）空缺;
adj. 首次的，开始的;
v. （打）开( open的现在分词);开始;睁开;启动;
💡 open 开；开始+ ing 名词后缀 → 开始的\r\n
"The European anthem was played at the opening and closing ceremonies."
欧洲颂歌在开幕式和闭幕式上演奏。
近义：hole, abruption, orifice, slot, breach, aperture
反义：layoff, liberation, liquidation, lockdown, quietus, quitclaim
adj. 严肃的，严重的;认真的，庄重的;重要的;危险的;
💡 射(se)日(ri)用藉丝(ous) 严肃的问题
"Her involvement in the fraud has left a serious blot on her character."
她卷入了这次欺诈案，在她的品格上留下了一个很大的污点。
近义：reliable, responsible, sedate, staid, trustworthy, trusty
反义：undependable, untrustworthy, feckless, slight, trifling, unimportant