荷兰小乳牛
chime inTo interrupt the speech of others, especially with an unwanted opinion.插话：尤指表达无用的看法而打断别人的说话
chaorenxiaoling
用英语可以说成It's not polite to cut in when your parents are chatting with others.
BeiJing我的爱
1. cut sb sth 为某人切某物。如：Cut me some pineapple. 给我切几片菠萝吧。He cut me a slice of bread. 他为我切了一块面包。 2. cut sth into sth 把某物切成某物。如：He cut the apple into halves. 他把它切成了两半。3. cut down (1) 砍倒。如：They cut down the big tree. 他们把这棵大树砍倒了。(2) 削减，压缩，You’d better cut the article down to about 2,000 words. 你最好能把这篇文章压到两千字左右。4. cut inin(1) 插入，插话。如：Don’t cut in when others are talking. 别人说话时别插话。(2) 插队，超车。如：He cut in at the head of the line. 他在队伍的前面插队。5. cut off 切断，隔断，断绝。如：We were cut off in the middle of our telephone conversation. 6. cut out 剪成，戒掉。如：I must cut out smoking. 我必须戒烟。我必须戒烟。
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