孩子们喜欢在平静的湖面上划小船。

The children enjoy rowing small boats on the calm ___still water.

池塘的静水像镜子一样反射着周围的树木。

The pond's ___still water mirrored the surrounding trees perfectly.

经过激烈的争论后，会议终于进入了平静期。

After the heated debate, the meeting finally reached a state of ___stillness.