商店里的许多水果都是人工种植的，以使其看起来完美。

Many fruits in stores are grown ___artificially to look perfect.

在干旱季节，湖水水位通过人工方式维持。

The lake's water level is maintained ___artificially during dry seasons.

有些饮料用人造甜味剂增甜以减少热量。

Some drinks are sweetened ___artificially to reduce calories.