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她聽講座時一直在打呵欠.She yawned during the lecture.聽得見我打呵欠的聲音 么 ?Can you hear my yawn?我上他的課時, 總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”的英語可以翻譯為：gape，yawning，yawn ...