The oil bowl contains both water and oil, which appear as clearly separated substances only for a few days and as the show progresses we see that the water gets contaminated by the oil.

水和油同置于“油”碗里，并呈现出分明的两层。但是随着展出时间的变长，我们不难发现水被上层的油浸染。

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Major causes for pollution from daily operation of oil depots are analyzed. Pollution source includes evaporation and leak of oils and discharge of contaminated water.

介绍了石油库在日常作业过程中对环境带来污染的主要原因，污染源为油品蒸发、油品泄漏和油库污水。

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