None of this is likely to be on hand if you cannot even afford to mend the dismally few highways you have.

如果你甚至不能承担惨淡的几条高速公路的维修，那么这些都不太可能发生。

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Instead of needing experts to be on hand every time a best-practice decision must be made, their expertise is captured in automated patterns and transformations so you can reapply it.

与其每次需要专家在现场做出最佳实践的决策，到不如在自动的模式和转换中获取他们的专家经验，这样您可以再次运用这些经验。

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On the one hand, if the body doesn't have enough cholesterol, we would not be able to survive. On the other hand, if the body has too much cholesterol, the excess begins to line the arteries.

一方面，如果身体没有足够的胆固醇，我们将无法生存；另一方面，如果体内胆固醇过多，多余的胆固醇就开始让动脉变厚。

《柯林斯英汉双解大词典》

On the other hand, if you choose not to be very motivated, not to be very responsible, not to be prepared to work very hard, you probably won't get a good education."

VOA: special.2009.12.03

On the other hand there may be some other spaces that students would be encouraged to search for those who might have experiences unlike their own.

除此之外，也有可能在一些别的空间,学生们会受到鼓励，去寻找,那些和自己经历不同的人。

普林斯顿公开课 - 人性课程节选

Well, on the one hand, if we make it be me and similar to me, boredom's going to set in.

一方面，如果永生的是我且与我相似，无聊将成为问题。

耶鲁公开课 - 死亡课程节选

Commonwealth Games medal winners are expected to be on hand to explain how their sport works.

BBC: Youth airgun marksman

Patients need 20 days of training and a partner to be on hand.

FORBES: Magazine Article

They need to be on hand to update the page throughout the day.

BBC: How to run a blow-by-blow account of a News Day