透彻 (tòu chè): ทะลุปรุโปร่ง

After three years of in-depth research, this scientist analyzed the problem very thoroughly, not overlooking even the smallest detail.

With just a few sentences, he explained this complicated legal issue very clearly and thoroughly, so that even a layperson could understand.

After reading that history book, I gained a more thorough understanding of the reasons for the decline of the Tang Dynasty, and no longer stayed merely on the surface as before.

The teacher sees problems very clearly and thoroughly, and can always point out the hidden logical flaws in our essays, leaving us genuinely convinced.

This market survey was conducted very thoroughly, so the company accurately grasped consumers' real needs and adjusted its product direction.