class board的用法和樣例：
例句
- You needn't erase the backboard after class.
課下你不必擦黑板。 - The rates of exchange are on the board there.
兌換率寫在那這的黑板上。
class board的相關資料：
臨近單詞
classact
class
Class-Vandemonde determinant
classified vector quantization
Classified Defense Information
class or representative action
classified financial statement
class-a transistor amplifier
class a single ended amplifier
classified telephone directory
Class contains a method called
Class contains a collection of
