adj.无法觉察的,无法发现的;
例句:
1、
2、
Many diseases that could harm humans may be both undetectable and harmless in their natural hosts.
许多对人体有害的疾病在它们天然的寄生体中可能既不易被察觉又是无害的.
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3、
As be the vertically moved vehicle of the elevator has more undetectable effect in daily life.
电梯作为高层建筑垂直运行的交通工具,在日常生活中的作用越来越不可忽视.
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