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