他看见她玩这个游戏十分认真的样子，觉得好笑。

He was amused to see how seriously she took the game.

《牛津词典》

图826：各种作业。很认真的样子，问题是，大学的作业是做出来的吗……。不管你们怎么做，我反正是抄的。

Photo 826: I never do the homework by myself. Copy is a easy way for finishing assignment.

youdao

我只知道，在那些瞬间，我也同样陪伴着你，静静地看着你认真的样子，静静地看着你无暇的手，时间和幸福就会在此刻凝固。

I only know that, in those moments, I also accompany you, quietly watching you seriously look, you have no time quietly watching the hand of time and will be happy at this moment solidification.

youdao