Not only are mothers not paid but also most of their boring or difficult work is unnoticed.

母亲们不仅得不到报酬，而且所干的乏味艰辛的活儿也很少被留意。

《柯林斯英汉双解大词典》

The language of kabuki is difficult to understand, but earphones are provided to explain the story, and there are also earphone services available in English.

歌舞伎中使用的语言很难理解，但是会提供耳机来解释故事的内容，还有英文解说服务。

youdao

However, we will never forget those difficult days, not only for the awful virus, but also for the efforts we made together and the lessons we learned.

然而，我们永远不会忘记那些艰难的日子，不仅是因为可怕的病毒，也因为我们共同作出的努力和吸取的教训。

youdao

But it also made it difficult for them to earn enough money to improve their condition.

VOA: special.2010.02.04

Now the intervention studies are stronger methods than the epidemiology studies but they're also more difficult studies to do.

相比传染病学研究,干预性研究更有效,但也更难执行

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

but it's also very difficult.

但是它也很难学。

要继续努力 - SpeakingMax英语口语达人

She was clearly excellent company, but also difficult and prone to quarrels.

ECONOMIST: Titled English writers

If it were easy to become rich we all would be, but as the rich and poor alike know intimately, getting rich is surely glorious, but also very difficult.

FORBES: Rather Than Bash the Rich, We Should Emulate Them

The task of complying with the tax code is now easier (thanks to computers) but also more difficult, because of the code's seemingly organic annual growth in length and obscurity.

ECONOMIST: The costs of complying with America's tax rules