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如题如题，代码：

const boxes = world.querySelector('.code'); // 当实体有标签名code
const startPosi = [67, 13.7, 63.9] // 初始位置
const endPosi = [67, 11.5, 63.9] // 结束位置
const ani = boxes.animate([
    { position: startPosi, duration: 8 },
    { position: endPosi, duration: 8 },
], {
    duration: 1,
    iterations: 1,
    direction: Box3AnimationDirection.WRAP,
})

ani.play({
    duration: 25, // 来回一次的时间
    iterations: Infinity,
    direction: Box3AnimationDirection.WRAP,
})