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English

1. obvious at a glance (idiom)
2. to be clear at a glance

粵語 — Cantonese

1. 非常清楚，睇一眼就明白晒

Examples

• 圖書館排過晒啲書，啲書放喺邊而家一目了然。

  The library has re-arranged the books and we can easily access the books we want at a glance.

• 男人老不老,自己心中有数;女人老不老,别人一目了然.

  A man is as old as he feels and a woman as old as she looks.

  Tatoeba · zhouj1955 CC BY