happy as a clam
非常快樂;非常滿足
口語·形容非常快樂滿足
英文釋義
extremely happy and content
例句
She's been happy as a clam since she got the new job.
典故來源
源自19世紀美國,完整說法是'happy as a clam at high water',漲潮時蛤蜊安全不被挖,比喻極度滿足。