as graceful as a swan 姿态优美；举止端庄

【例句】
Mary is as graceful as a swan in everything she does.
玛丽不管干什么事情，动作都非常优美。

I love to watch Mary dance. She's as graceful as a swan.
我很爱看玛丽跳舞，她的舞姿优美极了。