adj.可反对的，可对抗的；可相对的，（灵长类拇指）与其他手指相对的

Humans have opposable thumbs, allowing them to grasp and manipulate objects with great dexterity.
人类有对生拇指，这使他们能够灵巧地抓取和操作物体。
The opposable toes of primates help them climb trees easily.
灵长类动物的对生脚趾帮助它们轻松攀爬树木。
The characteristic that distinguishes some animals from others is their opposable digits, enabling a wide range of movements.
区分某些动物与其他动物的一个特点是它们具有对生的指（趾），这使得它们能进行各种各样的动作。
The aye-aye, a nocturnal lemur, uses its long, thin, and opposable middle finger to extract insects from tree bark.
夜行性的指猴利用其长而细、且能对生的中指从树皮中掏出昆虫。
The opposable feature of the thumb is what allows humans to hold tools effectively and create complex technologies.
拇指的对生特性使人类能够有效地握住工具并创造复杂的科技。
The possum's tail is not just for balance; it's also opposable and can be used to grasp branches.
负鼠的尾巴不仅用于平衡，它还是对生的，可以用来抓住树枝。
The unique opposability of our thumbs is a key factor in our ability to make and use tools.
我们拇指独特的对生性是我们制造和使用工具能力的关键因素。
Some robots are designed with opposable fingers to mimic human dexterity in handling delicate objects.
一些机器人被设计成具有对生手指，以模仿人类在处理精细物体时的灵巧性。
The platypus has webbed feet with an opposable digit, which aids in swimming and digging.
鸭嘴兽有蹼足，并且有一个能对生的趾，这有助于游泳和挖掘。
The opposable claws of certain birds, like the osprey, enable them to grasp fish securely from water.
某些鸟类，如鱼鹰，拥有对生的爪子，使它们能牢牢抓住水中的鱼。