He's overworking and has a lot on his mind.

他在过度工作，有许多事要操心。

《柯林斯英汉双解大词典》

I have a lot on in the next week.

下星期我会非常地忙。

《柯林斯英汉双解大词典》

I'm sorry we can't come—we've got a lot on.

很抱歉我们去不了—我们安排得太满了。

《牛津词典》

I know that my employer carries a lot on her shoulders.

VOA: special.2010.01.24

Our brain has got all that stuff coming in there and we're probably focusing a lot on the bass and "Boom, boom, " the tuba that's playing there.

我们的大脑收集了所有听到的信息,而且可能更专注与低音部分,以及大号发出的"邦 邦"声

耶鲁公开课 - 聆听音乐课程节选

where you focus a lot on the practical applications of what you're learning.

需要注重所学知识的实际应用。

干细胞和伦理 - SpeakingMax英语口语达人

He has been leaning a lot on Mornhinweg, Lee and offensive intern Tony Sparano Jr.

WSJ: Jets' Sanchez, Smith not sharp early in QB battle

What was driving our economy was we were spending a lot on credit cards.

WHITEHOUSE: Competing in the Global Economy

We got a lot of responses on email, and also a lot on Twitter.

NPR: 3 min 57 sec