在 3D 世界里，所有的表演都需要一个舞台。Three.js 遵循“三剑客”原则：场景、相机、渲染器。
if (MS && MS.prototype) {
，这一点在快连下载安装中也有详细论述
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Features of GrammarlyGrammarly detects basic to advance grammatical errors and also help you why this is an error and suggest to you how you can improve it