1 sentence

1. 他在中学时代就对自然科学表现出浓厚的兴趣。

   tā zài zhōng​xué shí​dài jiù duì zì​rán​kē​xué biǎo​xiàn chū nóng​hòu de xìng​qù.

   He has shown a strong interest in natural sciences since his middle school years.

   Source: Dong Chinese Dictionary