它几乎和[page:Object3D Object3D]是相同的,其目的是使得组中对象在语法上的结构更加清晰。
		var geometry = new THREE.BoxBufferGeometry( 1, 1, 1 );
		var material = new THREE.MeshBasicMaterial( {color: 0x00ff00} );
		var cubeA = new THREE.Mesh( geometry, material );
		cubeA.position.set( 100, 100, 0 );
		var cubeB = new THREE.Mesh( geometry, material );
		cubeB.position.set( -100, -100, 0 );
		//create a group and add the two cubes
		//These cubes can now be rotated / scaled etc as a group
		var group = new THREE.Group();
		group.add( cubeA );
		group.add( cubeB );
		scene.add( group );
		
		共有属性请参见其基类[page:Object3D]。
一个字符串:“Group”。这个属性不应当被改变。
共有方法请参见其基类[page:Object3D]。
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]