常見例句雙語例句Read the postfix expression from left to right.從左到右讀入后綴表達(dá)式If you could not pop two operators, the syntax of the postfix expression was not correct.如果您不能夠彈出兩個(gè)操作數(shù)，后綴表達(dá)式的語法就不正確。If the postfix expression was correctly formed, the stack should be empty.若后綴表達(dá)式格式正確，那么堆棧應(yīng)該為空。 返回 postfix