His invention required some creative engineering because wheelbarrows are meant to be pushed – not driven.

他的发明需要一些创造性的工程设计，毕竟独轮车是用来推的，而不是用来驱动的。

Stabilizing a very tall but very lightweight structure against lateral forces requires some creative engineering.

稳定一个非常高但非常轻的结构以抵抗侧向力需要一些创造性的工程。