英語三級每日口語(10.13)：I want to buy a new pair of lenses

I want to buy a new pair of lenses for my glasses.
    我想買副新鏡片。
    今天的幾個(gè)句子是有關(guān)買眼鏡的：
    1. Let me see your frame.
    我看看您的鏡架。
    2. My degree of nearsightedness is -4.0.
    我眼睛是400度。
    3. You should buy this brand.
    那買這個(gè)牌子吧。