in the traces的用法和样例：
- A human hair consists mainly of a protein called Keratin. It also contains some moisture and the trace metals and minerals found in the rest of the body.
- The wind was whispering in the trees.
- There are 26 letters in the English alphabet.
- A cloud is a mass of vapor in the sky.
- A fire was burning in the grate.
- You didn't embarrass me in the slightest.
- work in the traces 死板地工作,循规蹈矩...