"As soon as couples live together, it becomes more difficult to break up," she explained.

“一旦情侣们住在一起，就变得很难分手，”她解释道。

youdao

It becomes more difficult because there are by-products that are involved that complicate the safety and viability.

它变得更难是因为，有涉及到复杂安全性和可行性的副产品。

youdao

In the modern age we are bombarded with technology and external stimulation that it becomes more difficult to stay focused.

在现代我们更容易受技术和额外的刺激影响，从而更难于保持注意力集中。

youdao

I think it becomes more difficult.

我想就变难了。

学习是生活的一部分 - SpeakingMax英语口语达人

Yet each year it becomes more difficult to measure Christmas in anything other than retail sales.

BBC: An eye on simplicity

As they age, it becomes more difficult to force the crude from them.

FORBES: Magazine Article

The company is now making less money from each user as it becomes more difficult to generate advertising revenue.

BBC: Facebook's Instagram bid gets go-ahead from the OFT