小船在水面上轻盈地滑行。

The boat ___glided effortlessly across the water.

滑翔机在没有引擎动力的情况下优雅地滑翔。

The glider ___glided gracefully without engine power.

他的心情从焦虑不知不觉地转为平静。

His mood ___shifted from anxiety to calmness without him noticing.