Note the use of the w: prefix, which means that the flag variable is always local to the current window.
注意使用了w：作为前缀，这表示标记变量对于当前窗口来说始终是本地变量。
The central conditioner warehouse has the good effect of lowering temperature, low cost compared with the window conditioner-w...
采用中央空调制冷效果好，费用低，大大优于窗式空调。
The central conditioner warehouse has the good effect of lowering temperature, low cost compared with the window conditioner-w...
采用中央空调制冷效果好，费用低，大大优于窗式空调。
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