常見(jiàn)例句雙語(yǔ)例句Use a comment to negate the if (stateDetailsSB == null) { statement.使用注釋符來(lái)注銷(xiāo) if (stateDetailsSB == null) { 語(yǔ)句。Because a null statement is a statement , it is legal anywhere a statement is expected.由於空語(yǔ)句也是一個(gè)語(yǔ)句,因此可用在任何允許使用語(yǔ)句的地方。Enter a comment to negate the if (largestCityPopulationSB == null) statement by adding two forward-slash marks: //.通過(guò)添加兩個(gè)斜杠標(biāo)記,輸入注釋取消 (largestCityPopulationSB == null) 判斷語(yǔ)句: //. 返回 null statement