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》

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

Manually setting this information is not difficult, but also not ideal.

手动设置此信息并不是非常困难，但也不是非常理想。

youdao

but he's also insisting that this is an incredibly difficult, if not impossible, moment of thought.

但他同时坚持，如果可能，这对思维来说也是一个极其艰难的时刻。

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This not only makes troubleshooting problems difficult, but it also means that if Google changes something at their end, it could break Mailbox.

FORBES: Thoughts On Mailbox App

The researchers chalked this up not just to darker roadways, but also to drivers having a difficult time adjusting to the end of daylight-saving time.

CNN: Daylight-saving time could sabotage your sleep schedule

The appearance of cases with mild or no symptoms in humans could make tracing even more difficult, but may also mean that many people infected do not get seriously ill and recover quickly, making the virus is less deadly than it appears.

NPR: A New Case In China Adds Unknowns To Bird Flu