camera.position.z = 40：这一步很关键！默认情况下，物体在坐标原点 (0,0,0)，相机也在原点。如果你不移开相机，你就跟物体“贴脸”了，什么也看不见。我们把相机往后拉 40 米，就能看清全貌了。
Casetify Samsung Galaxy S26 phone cases
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Weak Wi-Fi can turn everyday tasks into small frustrations, whether it’s a video call that drops mid-sentence or a stream that refuses to load in certain rooms. If upgrading your router isn’t an option, a Wi-Fi extender can be a practical way to stretch your existing network farther and smooth out coverage gaps — without rewiring your home or rearranging furniture.