关于这(池碧水)到底是怎么一回事,大家已作出众多猜测。然而,到目前为止,还没有定论。
Several people have speculated that the change is due to algae in the water, perhaps because the pool is lacking in chlorine.
一些人推断,这种变化是由于水中的藻类,也许是因为池水中缺氯。
Other theories suggest because pool is outdoors, it can accelerate algae growth if the water is exposed to the sun.
其他人指出,因为水池在户外,如果池水暴晒于阳光下,则会加速藻类生长。
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