At four months babies can grasp objects with their hands.
四个月大时就能用手抓东西。
Opposable thumbs are essential because they give people the ability to grasp objects.
对生拇指非常重要，因为人们需要依靠拇指来抓取物体。
I can track objects and grasp them with my hand.
我可以跟踪目标并用手捉住它们。最重要的是我可以踢足球。
I can track objects and grasp them with my hand.
我可以跟踪目标并用手捉住它们。最重要的是我可以踢足球。
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