英语语法分析

The Bisu people of Lancang have been identified as the Lahu people in 1990. However, the Bisu people of Menghai have not been identified its ethnic genera yet.

澜沧等地的毕苏人经过识别，已于1990年归入拉祜族，勐海的毕苏人则尚未确定族属。