冰淇淋在冰箱里放太久会变成固体。

Ice cream becomes ___solid if left in the freezer too long.

孩子们用积木搭建各种立体图形。

The children built different ___solids with blocks.

婴儿开始吃固体食物后，需要更多的水分。

Babies need more water after starting to eat ___solids.

过滤后，咖啡渣之类的固体物质留在滤纸上。

After filtering, ___solids like coffee grounds remain on the filter paper.