这个牌子的笔写起来很滑顺。

The pen of this brand writes smoothly.

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先进滋润配方，能全天候维持你肌肤的柔嫩、滑顺及健康的光泽。

An advanced moisturizing system helps keep skin soft, smooth and healthy looking, day after day.

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确定当你把拉杆拉回来时里面没有不会动的气泡，这个步骤里刹把的动作要缓慢且滑顺。

Make sure there are no suspended air bubbles in the water when you are backing the lever out. The lever actuation must be slow and smooth here.

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