多年以来，混凝土被认为是坚固耐久的。

Concrete has been regarded lasting and durable.

youdao

对上下游护坡的要求是坚固耐久，能抵抗各种因素的破坏作用，并保证底层不受淘刷。

Revetments must be sturdy and durable, able to resist damages caused by various factors. Their undercourse must not be scoured.

youdao

架空支撑结构：采用镀锌钢制造的横梁、支架、高度调节范围大，坚固耐久，安装方便。

Aerial support structure: beam and stander made from galvanizing steel, adjustable height, strong and durable, easy to install.

youdao