英语语法分析

Chloasma is preventable by daily use of a facial sunscreen.

黄褐斑通过日常的面部防晒是可以防止的。

Observe the effect of acupuncture and medicinal bath on chloasma.

观察针灸配合药浴治疗黄褐斑的效果。

Results:The symptoms of chloasma were significantly better than before.

结果：本法对改善面部黄褐斑疗效明显。