ZH TH VI EN DE ES IT FR ML
TH-ZH VI-ZH EN-ZH DE-ZH ES-ZH IT-ZH FR-ZH


LessonChinPicture
VieDeuNorthern Pronunciation

Goethebuch ChineseMJS

他们 钻研 问题
Tāmen zài zuānyán yīgè wèntí.
They're delving deep into a problem. (or They're studying a problem diligently.)



2355 他们 钻研 问题


2000 Words