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来源:雅诚德英语网
The "sunshine vitamin" is synthesized in our skin when we are exposed to direct sunlight, but sunblock impedes this process.
维他命d这种“阳光维他命”是我们晒太阳时,在皮肤中合成的一种物质,但防晒霜会阻碍这一过程的发生。
The "sunshine vitamin" is synthesized in our skin when we are exposed to direct sunlight, but sunblock impedes this process.
维他命d这种“阳光维他命”是我们晒太阳时,在皮肤中合成的一种物质,但防晒霜会阻碍这一过程的发生。