4. 后来他们尝试用不同的发声和奏乐方法，所使用的压韵词汇，经常是来自美籍非洲人的文化当中。 Later they ___________ ______ different vocal and rhythmic approaches, using rhyming words, often words from African – American culture.

experimented with

experiment with … 用……做实验 他们正在实验新的教学方法。 They are experimenting with new methods of teaching. by experiment 通过实验 make / carry out / do an experiment on / upon / in / with 做……实验（试验）