jQuery css() 方法设置多个样式属性

$big.css("margin-left", x + "px");
$big.css("margin-top", y + "px");
$big.css("background-position", bigX+" "+bigY);

这种带变量的属性设置该怎么合并成一条语句啊？

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跟对象一样
$big.css({

   "margin-left": x + "px",
   "margin-top":y + "px",
   "background-position": bigX+" "+bigY
   })