坚固的英文：
solid

参考例句：

A substantial building
坚固的建筑物

The dam was not strong enough to hold back the flood waters.
水坝不太坚固，挡不住洪水。

Treacherous ice
(看起来坚固而)踏上去会破裂的冰

The material must be moderately coherent and firm.
材料必须有适度的粘着力和坚固性。

The dam gave way; it was not strong enough to hold the flood waters.
水坝崩塌了，它不够坚固，挡不住洪水。

The float is a chemical resistant polypropylene casing with a firmly bonded electrical cable protruding.
浮球采用抗化学物质腐蚀的聚丙烯外壳，配置坚固保护的电缆接头。

A chain is no stronger than its weakest link. ——Conan Doyle
一条铁链的坚固程度取决于它最弱的一个环节。——柯南道尔

Sheltered by thick but bare bluffs of aspens, stood a large house, built of logs, white-washed, solid.
在一片稠密却光秃的白杨树丛掩蔽之下，有一所用圆木造的大房子，粉刷洁白，坚固结实。

The support for the tent is rigid.
帐篷的支柱很坚固。

It's a material of substance.
那是一种坚固的材料。

solid是什么意思：
adj. 固体的；坚固的；实心的；纯的；一致的
n. 固体，立体图形，立方体

on solid ground
在稳固的基础上

An extremity of a solid is a surface.
立体的边界之一是一个面。

To become compact or solid;cohere.
凝固使坚实或变硬；粘着紧凑

This spoon is solid silver.
这把汤匙是纯银的。

These curtains are solid blue.
这些窗帘是纯蓝色的。