Nghĩa tiếng Việt
- Khó thấy.tính từEN-VI Dict
- Khó phân biệt.tính từEN-VI Dict
- Không dễ quan sát.tính từEN-VI Dict
Ví dụ
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The tiny mark was almost unobservable.
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The difference was unobservable at first.
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The star was unobservable in bright light.