Docs: Updated frustumCulled description.

docs/api/en/core/Object3D.html

@@ -53,8 +53,7 @@
 
 		<h3>[property:Boolean frustumCulled]</h3>
 		<p>
-		When this is set, it checks every frame if the object is in the frustum of the camera before rendering the object.
-		Otherwise the object gets rendered every frame even if it isn't visible. Default is *true*.
+		When this is set, it checks every frame if the object is in the frustum of the camera before rendering the object. If set to `false` the object gets rendered every frame even if it is not in the frustum of the camera. Default is `true`.
 		</p>
 
 		<h3>[property:Integer id]</h3>

docs/api/zh/core/Object3D.html

@@ -51,8 +51,7 @@
 
 	<h3>[property:Boolean frustumCulled]</h3>
 	<p>
-		当这个属性被设置的时候，它将在渲染物体之前，检查每一帧的物体是否在摄像机的视锥体中。
-		否则，即使该物体不可见，它也将在每一帧中被渲染，默认值为*true*。
+		When this is set, it checks every frame if the object is in the frustum of the camera before rendering the object. If set to `false` the object gets rendered every frame even if it is not in the frustum of the camera. Default is `true`.
 	</p>
 
 	<h3>[property:Integer id]</h3>