透彻 tòuchè penetrating
penetrating; thorough; incisive
How to remember 透彻: 透 to pierce + 彻 penetrating = penetrating.
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How it is used
- 'Thorough and penetrating' - of understanding or analysis - 分析得很透彻 (fēnxī de hěn tòuchè) analyzed very incisively.
- Applies to thought, not physical cleanliness: 理解透彻 (deeply understood). Contrast 彻底 (chèdǐ, complete/all the way), which can be physical (打扫彻底 clean thoroughly).
- Praises depth and clarity of insight.