“打呵欠”造句

她听讲座时一直在打呵欠.
She yawned during the lecture.

听得见我打呵欠的声音 么 ?
Can you hear my yawn?

我上他的课时, 总是竭力地制止自己打呵欠.
When I attended his lecture, I always tried hard to strangle yawns.

• #打呵欠