名詞 heart and soul:

1. the choicest or most essential or most vital part of some idea or experience
   同義詞：kernel, substance, core, center, essence, gist, heart, inwardness, marrow, meat, nub, pith, sum, nitty-gritty

副詞 heart and soul:

1. with complete faith
   同義詞：body and soul

1. Otherwise he would still be teaching, because his heart and soul were still in the classroom with his students.
   要不然他還會在教書，因為他的心仍然在課堂上和他的學生們在一起。
2. Jane plays tennis badly, but with heart and soul.
   簡網(wǎng)球打得不好，但卻全力以赴。
3. He serves the people heart and soul.
   他全心全意為人民服務。