appear unpredictably
基本解释
- 出没无常
英汉例句
- Because the cave fish may not need less sleep—they may need to stay awake to forage more in an environment where food can be scarce and appear unpredictably.
因为洞穴鱼可能并不需要更少的睡眠--它们需要保持清醒，搜寻更多的食物，毕竟洞穴中食物不仅量少而且难以寻找。 - Because the cave fish may not need less sleep—they may need to stay awake to forage more in an environment where food can be scarce and appear unpredictably.
因为穴居鱼可能并不需要睡得更少——它们可能需要保持清醒，以便更经常地在食物短缺和食物不常出现的环境中觅食。
双语例句
词组短语
- to appear and disappear unpredictably 出没无常