The softconcrete will harden till it is like stone.
水泥将变硬直到像石头一样。
2
When cracked, the concrete absorbs moisture from surrounding air, then becomes soft and "grows," filling in the crack.
出现裂纹以后，混凝土会从周围的空气中吸收水蒸气，变软进而“生长”，从而将裂缝填充起来。
3
If you happen to spill some gas or oil on the floor, newspaper will help absorb the spill and can prevent a permanent stain on concrete or a soft spot in your asphalt drive.