v.打呵欠；张开n.呵欠；乏味的人（事） 名词:yawner过去式:yawned过去分词:yawned现在
中文解释
\"the yawning in the audience told him it was time to stop\"\"he apologized for his oscitancy\"
\"the yawning in the audience told him it was time to stop\"\"he apologized for his oscitancy\"