唐：是的。在它变坚固之前我们必须禁止人们在这上面走过。

TANG: Yes, and we must stop people walking on this floor until it's firm.

youdao

以前的冰块坚固结实，只是在边缘发生融化和再次冻结。现在冰层变薄，变脆，更易融化。

Formerly a solid mass that melted and refroze at its edges, it is now thinner, more fractured, and so more liable to melt.

youdao

然而我们清楚的意识到，保护水资源，节约每一滴水，就是“为生命之源”加上一把枷锁，让它变的非常坚固。

However, we clearly realize that the protection of water resources, to save every drop of water, that is, "as the source of life" with a yoke, it has become very strong.

youdao