美国的大城市形形色色，却有许多共同的问题。
The largest American cities are a diverse group, but they share certain problems.
含有三色萃和紫草科类植物的护肤产品对问题肌肤尤其有效。
Skin products with wild pansy and comfrey are especially helpful for problem skin.
数字化色标是数字色彩的一种应用形式，在数字化色标中存在着析色、提色的问题。
In the digital color batch, there exists the problem of color analysis, color distill.
含有三色萃和西门肺草的护肤产品对问题肌肤尤其有效。
Skin products with wild pansy and comfrey are especially helpful for problem skin.
含有三色萃和西门肺草的护肤产品对问题肌肤尤其有效。
Skin products with wild pansy and comfrey are especially helpful for problem skin.
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