in real earnest

例句：

1. 1. Shespoke in a voice that was truly sincere.
   她说话的声音非常真诚。
2. 2. He expressedhis gratitude with sincere thanks.
   他真诚地表示感谢。
3. 3. The teacher spoke earnestly aboutthe importance of education.
   老师认真地谈论教育的重要性。