add more description

docs/api/core/Object3D.html

@@ -387,13 +387,13 @@
 		</p>
 
 		<h3>[method:this translateX]( [param:Float distance] )</h3>
-		<p>Translates object along x axis by *distance* units.</p>
+		<p>Translates object along x axis in object space by *distance* units.</p>
 
 		<h3>[method:this translateY]( [param:Float distance] )</h3>
-		<p>Translates object along y axis by *distance* units.</p>
+		<p>Translates object along y axis in object space by *distance* units.</p>
 
 		<h3>[method:this translateZ]( [param:Float distance] )</h3>
-		<p>Translates object along z axis by *distance* units.</p>
+		<p>Translates object along z axis in object space by *distance* units.</p>
 
 		<h3>[method:null traverse]( [param:Function callback] )</h3>
 		<p>