yánjiū / rényuán / guānchá / dào / hóuzi / de / qiánzhī / nénggòu / línghuó / de / zhuāzhù / xì / shùzhī研究人员观察到猴子的前肢能够灵活地抓住细树枝。The researchers observed that the monkey could use its forelimbs to grasp thin branches with ease.