busy
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：
It'll have to wait. This is our busiest time
这事得往后放。这是我们最忙碌的时候。
I'm pretty busy just now
我现在特别忙。
He busied himself with the camera
他忙着摆弄那个相机。
Rachel said she would be too busy to come
雷切尔说她太忙，不会来了。
I had a busy day and was rather tired.
今天很忙，我累坏了。
I tried to reach him, but the line was busy.
我试图和他联系，但他的电话占线。