從容不迫
Take things easy.
Take one's time.
Cool as a cucumber.
eg:No matter how difficult the job be, john always takes things easy and does it well.
中英俚語俗語來源:史記:“良嘗聞從容步游下邳圯上。”
同義詞:慢條斯理 Make two bites of a cherry.
反義詞:迫不及待 Eat the calf in the cow's belly.