1.a rare yellow-faced monkey of the langur family.
1.On the walk back we got lucky again and saw some Douc Langurs!
路上,我们有幸又看到了几只白臀叶猴!
2.The Douc Langurs are only found in Lao and in Vietnam, and we saw 20! Incredible!
白臀叶猴只在老挝和越南发现过,而我们竟然看到了20只!真不可思议!