Digging busily with teeth and claws, they opened the little door and slipped in.
他们用牙齿和爪子使劲地挖着,打开小门溜了进去。
But at the sanctuary, there was a wide range of tool use, including digging, using tools to reach objects, nutcracking, and cleaning their teeth...
但是在保护区,使用工具的现象也很普遍,包括用工具来挖土,够东西,夹东西甚至是清洁牙齿。
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