基本解释num.十分之七同根派生 seven-tenths相关词英汉例句用作数词 (num.)About seven tenths of the earth's surface is covered with water while three tenths of it is covered with land.地球表面约有十分之七布满了水,只有十分之三的地表为陆地所覆盖。seven-tenths更多例句