allows in短语¹¹⁴⁴⁶⁷⁺⁴ 例句 The frog is active at night, and during the day covers its bright red eyes with a golden membrane that allows in just enough light for the animal to detect the movement of any possible predator. 这种蛙在晚上活动，白天就用金色的眼膜把鲜红的眼睛遮起来，保持合适的光线用来辨别任何可能的掠食者的移动。163