slight illness

例句：

1. 1.The temperature was slightly above freezing.
   温度略高于冰点。
2. 2. She had a slight cough and felt unwell.
   她咳嗽轻微，感觉不舒服。
3. 3. The light was slightly dimmed by the rain.
   雨使灯光略微昏暗。