?? 詞語組成解析
[醫] 芥屬, 蕓苔屬
abbr. National Association of Postmasters of the United States 美國國家郵政局長協會; Nuclear Auxiliary Power Unit System 核輔助動力單元系統
??? 情景例句
Your room number is 512. Here's your key.
房間號碼是512。這是您的鑰匙。
He insisted that we all be in his office at one o'clock.
他要求大家一點鐘到他的辦公室。[大學英語四級]
Because the gravity on the Moon's surface is only a sixth of Earth's
由于月球表面的重力僅是地球表面的1/6-