engaged
单词辨析：
形容某人要做的事情多或者某个地方活动多、很热闹。
She is busy now; please wait a moment.
她正在忙，请稍等一会儿。
September is the busiest time of year for book shops.
9月是一年中书店最忙碌的时候。
That restaurant is located on a very busy road.
那家餐馆位于一条非常热闹的大街上。
尤指人好活动的。
She is now over 70 and not very active.
她现在70多岁，不大活动了。
His mother always led a very active life.
他的母亲一直过着忙忙碌碌的生活。
指忙于做某事（尤指公务）而脱不开身的。
I'd come to the party but I'm afraid I'm otherwise engaged.
我很想参加聚会，但恐怕我另有公务，难以脱身。
She is now engaged in writing letters.
她现在正忙着写信。
相关例句：
Tom is engaged to Anne.
汤姆已与安妮订婚。
He has been engaged 10 years on the dictionary.
他从事这本词典的编纂工作已达10年之久。
I have never engaged in the drug trade
我从未参与过毒品交易。
He is engaged in commerce.
他从事商业。
They talk about detente, but in actuality they are engaged in intense rivalry.
他们嘴里讲缓和，骨子里却进行激烈的争夺。
I'm engaged this afternoon.
我今天下午有事。