reflective

Cyclists should wear reflective vests at night so that drivers can see them in the dark.

(Chinese) 骑行者晚上应该穿着反光背心，以便司机在黑暗中能看到他们。

The calm surface of the lake acted like a reflective mirror, showing the mountains perfectly.

(Chinese) 平静的湖面像一面反光镜，完美地倒映着群山。

He always becomes reflective in preparation for the new year, thinking about his goals.

(Chinese) 在迎接新年之际，他总是会陷入沉思，思考自己的目标。

The professor's reflective mood suggested he was still processing the results of the experiment.

(Chinese) 教授那副沉思的神态表明他仍在消化实验结果。