Take about2 cm and add water to form foam. Massage on face then rinse with water.

使用方法：取约2厘米的份量加水起泡，在脸上按摩后用水冲洗。

youdao

Metals such as aluminum can also form foams -- and because of their greater rigidity, they could, in theory, dissipate as much energy as a polymer foam in a much thinner layer.

金属，如铝，也可以制备成泡沫材料。 由于金属更高的刚度，理论上，更薄金属泡沫就可以吸收聚苯乙烯泡沫所能吸收的能量。

youdao

Collectively these tiny ice fragments form delicate swirls of ice that resemble foam on latte.

这些聚集的小块浮冰碎块形成漩涡状，看起来像拿铁咖啡的泡沫。

youdao