After singing all night in the tavern, I had a frog in the throat next morning.
在酒馆里唱了一整夜歌，第二天早晨我的嗓子有点嘶哑了。
Staff surveying frog species deliberately choose the night-time to catch frogs and collect their droppings, to avoid setting a "bad example" to daytime Visitors.
研究蛙类的调查人员刻意选在夜间捕蛙、采集粪便，以避免在白天工作，给游客「错误的示范」。
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。
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