“结皮”造句

要不时地搅拌牛奶蛋糊，防止其表面结皮。
Stir the custard occasionally to prevent a skin forming.

乳胶使用后应密封存放,防止乳胶表面结皮造成浪费.
Pls seal up after use it to avoid freezing.

牛奶结皮了.
The milk has skinned over.

• #结皮