轮子旋转时需要承受巨大的和不断变化的压力，所以要使结构更坚固，钢的部分要用螺栓连接，而不是焊接在一起。

The wheel would need to withstand immense and constantly changing stresses as it rotated, so to make the structure more robust, the steel sections were bolted rather than welded together.

youdao

眼前出现的是一个发光的人影，那是一个脸上带着微笑的男人，手里拿着一把巨大，坚固，货真价实的斧头。

Standing there was the glowing figure of a man with a smile on his face and a large, solid, and definitely real axe in his hands.

youdao

一般来说，城堡是巨大的建筑物，需要打下夯实的地基和使用如石头般坚固的材料。

Castles are usually enormous structures requiring strong foundations and the use of heavy construction materials such as stone.

youdao