灯光正照着他的眼睛,他什么也看不清.The light was shining in his eyes and he could not see.房子在薄雾中隐隐约约看不清.The houses appeared as a blur in the mist.在越来越暗的情况下,什么东西都看不清.In the gathering gloom it was difficult to see anything distinctly....
天文学家能够测定每颗恒星的亮度。An astronomer can determine the brightness of each star.星星的光亮度各不相同.Stars vary in brightness.用18瓦的荧光灯灯泡有同样的亮度，而用电量却减少75％。With an 18-watt fluorescent bulb you get as much light but use 75% less electricity....