一个个地去送钱成本略高，操作也困难些，但仍然值得一试。

Retail bribery is expensive and difficult but might still be worthwhile.

youdao

美国现在所面临的挑战比我刚到芝加哥时要多得多也困难得多，但我们一定能战胜这些挑战。

The challenges we face as a nation are now more numerous and difficult than when I first arrived in Chicago, but I have no doubt that we can meet them.

youdao

不过我向读者保证，如果没有Eclipse平台和PDE，任务会更加复杂，而且使用任何其他IDE的扩展api也困难得多。

But I can assure the reader that the task would have been much more complex without the Eclipse platform and PDE, and also it would have been much harder using any other IDE extension API.

youdao

- Part of the challenge is speed, too, how quickly you can get these answers in terms of getting them in on time.

部分困难也会来自于速度，你多快能做出答案,能否在规定的时间做完。

麻省理工公开课 - 化学原理课程节选

If somewhere later on in the code it shifts to string, I might not be manipulating that and getting actual values out, but not what I wanted, and it's going to be really hard for me to chase it back.

然后后面的一些代码,把变量类型变为了字符串，我可能不会通过实际操作,去取得实际的变量的类型，但是这并不是我想要的类型,而且对我来说把类型，变回去也很困难。

麻省理工公开课 - 计算机科学及编程导论课程节选

And, in support of the second alternative, even adults find these tasks involving lying and deception more difficult.

即使成年人也会发现,包含谎言与欺骗的任务要更加困难,这支持了第二种观点

耶鲁公开课 - 心理学导论课程节选