The cycle repeated over and over again , building up a series of crusty, crumbly layers.
这样的循环一次次重复, 形成了一层层硬且易碎的岩层.
网络文摘精选
Because it reacts easily with oxygen in the air to produce crumbly red iron oxides.
因为它非常容易和空气中的氧气起反应,生成易碎的红色氧化铁.
网络文摘精选
Cheddar is always made from cow's milk and has a slightly crumbly texture if properly cured.
切达是有牛奶做成的,如果用适当的方法制作就会有着非常细微的松散组织.
网络文摘精选
