I would like my salad dressing on the side, please.

At a restaurant, you can tell the person working there that you want your salad dressing to be served in a little cup ‘on the side’ instead of covering the salad.  That way, you can put as much or as little on your salad as you want.

請把沙拉醬另外放，不要直接澆在生菜食品裡。

在餐廳點菜時，可能用到這樣的句子。如果你指定沙拉醬（生菜食品的調味料）另外盛在小碟子裡，那麼，吃生菜時，想沾多少就沾多少，也就不會太濃或太淡了。