earnestness
n. 认真;诚挚;正经
例句
I think my earnestness amused him.
我想我当时那认真劲儿让他觉得好笑。
We would admire both his earnestness and his self-aware irony.
我们由衷地钦佩他的认真和有自知之明的讽刺艺术。
The old man's eyes sparkled with wisdom, earnestness and a childish smile.
老人的眼中闪烁着智慧的光芒,眼神坚定不移,时而还会露出孩子般灿烂的笑容。