On the surface, these USES appear more individual than social, more self-indulgent than altruistic.

从表面上来看，这些用途是个人的而不是社会的，是自我陶醉而不是利他主义。

youdao

The durable, efficient, self-sharpening, protective, non-black surface, the high finish.

该产品耐用、高效、自锐、防堵、工件表面不发黑、光洁度高。

youdao

The durable, efficient, self-sharpening, protective, non-black surface, the high finish.

该产品耐用、高效、自锐、防堵、工件表面不发黑、光洁度高。

youdao