荷兰共有近3500处堤围泽地，几乎所有这些地区都需要不断抽干积水，以免附近的住宅及建筑物遭到洪水灾害。
There are almost 3500 polders in the Netherlands, and almost all of them are continually pumped dry to keep flood waters from destroying nearby homes and buildings.
建筑工地、小型积水和市政排水设施是广州市城区主要蚊虫孳生地。
The construction sites, the small-scale ponding and the drainage systems are the main breeding places.
小型积水是广州市白纹伊蚊重要孳生场所，致倦库蚊主要孳生场所是建筑工地、市政排水设施等。
The small-scale ponding is the most important for Ae. albopictus, while the construction sites and the drainage systems are the most important for Cx. pipiens quinquefasciatus.
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