undetectable

IPA/ˌʌndɪˈtektəbl/
KK[əndɪtˈɛktəbəl]IPA/ˌʌndɪˈtektəbl/

undetectable — 形容詞

  • undetectablepositive
  • more undetectablecomparative
  • most undetectablesuperlative

1. Something that is undetectable cannot be observed, discovered, or measured, even

1.形容詞B2
釋義

無法發現

不可能被注意到或找到的

Something that is undetectable cannot be observed, discovered, or measured, even when the right methods or instruments are used — for example, a virus that stays hidden in the body, or a sound too quiet for any microphone to pick up.

例句

The virus can remain undetectable in the body for years before symptoms appear.

病毒可以在體內潛伏多年而不被發現，直到症狀出現。

pattern: undetectable in + location (body, system, environment)

Rodrigo used a special ink that was undetectable under normal light.

Rodrigo 使用了一種在一般燈光下無法察覺的特殊墨水。

常見搭配
  • remain undetectable
  • virtually undetectable
  • almost undetectable
  • undetectable to the naked eye
  • undetectable levels
  • undetectable by standard tests
同義詞
  • imperceptible

    focuses on being too slight or gradual for the senses; more about physical perception than deliberate searching

  • invisible

    limited to sight only; something invisible cannot be seen, but may be detectable by other means

  • hidden

    implies deliberate concealment or covering, whereas undetectable is about the result (cannot be found) not the intent

反義詞
  • detectable

    the direct opposite — able to be noticed, found, or measured

  • obvious

    very easy to see or understand; a much stronger degree of noticeability

文法句型

undetectable to + observer

undetectable by + method/instrument

undetectable in + location/system

用法筆記

Frequently followed by a prepositional phrase beginning with 'to' (the observer) or 'by' (the method). The subject of the sentence is something that exists but cannot be perceived — it is not the same as saying something is absent or non-existent.

常見錯誤

The small scratch on the table is undetectable' (when meaning no one has noticed it yet).
The small scratch on the table has not been noticed yet.
'undetectable' means it cannot be found even with deliberate effort, not simply that no one has spotted it.
Her sadness was undetectable' (vague).
Her sadness was undetectable to the other guests at the party.
'undetectable' most naturally pairs with a specific observer or method.

同根字

常見搭配

名詞搭配

副詞搭配

常用片語

  • undetectable to the naked eye
  • undetectable by standard methods

介系詞搭配