Transporting critical in time-sensitive supplies is hard by ground.

通过地面运输关键的时间敏感物资很困难。

That's the thing that's hard, by the way.

多说一句，这就是表演的困难所在。

He added that his House was hard by, and begged me to accompany him thither.

他补充说他的房子就在附近， 求我陪他去。

Here's Why This One is Hard, by Liz We're smart. We get it. We know guys should be attentive and considerate and thoughtful.

这就是为什么这件事很难办到的原因，莉兹我们知道自己很聪明。我们知道男人应该细心体贴，体贴周到。