For safety reasons, the light bulb at the bottom of the pool is placed under a thick piece of glass.

由于安全原因，灯泡在水池的底部被放在一厚的玻璃下。

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For safety reasons, the light bulb at the bottom of the pool is placed under a thick piece of glass.

由于安全原因，灯泡在水池的底部被放在一厚的玻璃下。

youdao