1. Since some medicines cause drowsiness, it's best not to drive while taking them. 因为有些药会使人产生睡意，所以吃了药最好不要开车。
2. The ensuing drop in body temperature will naturally initiate drowsiness and sleep. 随之而来的是体内温度下降，自然会导致困倦和睡眠。
3. The sprits in the world, give drowsiness to the wear out people, let them find their reverie in the dream. ――Dormancy! 世界上的精灵们，请给疲劳的人们送去一份睡意，让他们在梦中找到自己的归宿。――沉睡术。
