Chalk bed

中文含义：白垩岩层

英语词性：noun

美式音标： /tʃɔk bɛd/

同义词：chalk formation

易混淆单词：chalkboard

双语例句：

  • The chalk bed in this area is famous for containing fossils of prehistoric creatures.
  • Geologists have long studied the unique features of the chalk formation in England.