all the crud in the bottom of the saucepan
锅底部得积垢。

He said he had the crud and needed a doctor.
他说他得了怪病，急需医生。

Bats usually crud in their nests, and most of them are harmless.
蝙蝠通当会聚集成一大片在巢穴里, 而他们大部份是无害的。

Uncertainty analyse of determination of crud protein content in feed by kjeldahl method
凯氏定氮法测定饲料中粗蛋白含量的不确定度分析

OBJECTIVE To establish detection methods of 6 kinds of crud drugs in Qiju Dihuang granules.
摘要目的建立杞菊地黄颗粒中部分药材的薄层鉴别方法。

Step 3 Clean the freeze plug mounting surface of any rust and crud with a bit of emery cloth.
第三用砂布清理冻结的塞子安装面, 去除全部的锈渍和污垢。