If someone tells you if a glass is filled to the half with water, is it half-empty or half-full?
假如有人告诉你一个瓶子里装半瓶水，那么你是说：它是半满还是半空？请告诉他：它是半满的！
For containers that are in use, turn them over or empty every 3-4 days to prevent mosquito breeding including any water-filled containers indoors.
对于仍使用的容器，包括室内任何装有水的容器，应将它们扣置或每3 - 4天倒空一次以防止蚊子繁殖。
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