Wipe gums with a clean, damp cloth or gauze pad.

用一块干净的湿润的棉布或者纱布擦拭牙龈.

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Scrub each optical surface with a gauze pad soaked in acetone.

或者用含丙酮的网垫擦洗光学表面.

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Scrub each optical surface with a gauze pad soaked in acetone. Rinse thoroughly with distilled water.

或者用含丙酮的网垫擦洗光学表面. 然后用蒸馏水漂洗.

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