“一心一意”，漢語成語，意思是形容做事專心一意，一門心思地只做一件事。可以翻譯爲“give one's whole mind to， with one's whole heart and soul或put one's whole heart into”等。
例句：
他一心一意準備試驗。
His whole mind was trying out the experiment.
他們能一心一意教學而沒有後顧之憂。
They can teach with one heart and one mind without the worries behind.