v-shaped tetrad
基本释义
V型四分子
实用场景例句
学术讨论
The researchers were able to observe the animals undetected using hidden cameras.
研究人员利用隐藏的摄像机能够不被察觉地观察动物。
日常对话
The thief entered the house undetected through the back window.
小偷未被察觉地通过后窗进入了房子。
校园生活
The student slipped into the exam hall undetected before the bell rang.
在铃声响起前，学生未被察觉地溜进了考场。
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