a type of soft white stone 白垩
the chalk cliffs of southern England
英格兰南部的白垩质峭壁
N-UNCOUNT Chalk is small sticks of chalk, or a substance similar to chalk, used for writing or drawing with. [also N in pl]
例：
…somebody writing with a piece of chalk.
a type of soft white stone 白垩
the chalk cliffs of southern England
英格兰南部的白垩质峭壁
N-UNCOUNT Chalk is small sticks of chalk, or a substance similar to chalk, used for writing or drawing with. [also N in pl]
例：
…somebody writing with a piece of chalk.