Koslov shows a lot of promise, but he still has plenty to prove.

科思·洛夫显示了承诺很多，但他仍然有很多东西需要证明。

youdao

From the first throbbing bass notes by Boris Koslov in "Gunslinging Birds" to the animated trombone and vocals of Ku-umba Frank Lacy in "E's Flat, Ah's Flat Too, " and the roaring full-band choruses that close out "Wednesday Night Prayer Meeting, " the Mingus Big Band was on.

NPR: Mingus Big Band: A Rousing, Raucous Concert