He was very earnest and thoroughgoing about it, and the affair took quite a long time.

他做事很认真，很彻底，这件事花了很长时间。

youdao

"Then I will try again," said George, in a decided tone; and, flinging aside his half-made kite, he turned and re-entered the house, and was soon bending in earnest attention over his lesson.

“那我再试一次。”乔治坚定地说；把他的半成品风筝扔到一边，再次转身进了屋，很快弯下腰来认真做功课了。

youdao

Catherine was a pious, earnest woman.

凯瑟琳是位虔诚、真挚的女子。

《柯林斯英汉双解大词典》

When he was earnest in discourse, these shone, as it were, a bright- as if a bright live coal within it.

当他认真地在谈话，两只眼睛便闪闪发光，就好像明亮的燃烧着的煤块。

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