In general, the SERS enhancement can be attribute to electromagnetic (em) and "chemical" mechanism.

一般认为SERS增强可以归于电磁增强和化学增强机理。

youdao

The obesity epidemic began in the 1980s, and many people attribute it to increased portion sizes and inactivity, but that can't be everything.

肥胖在20世纪80年代开始蔓延，许多人将其归咎于食物份量增加和缺乏运动，但这不可能是全部原因。

youdao

Visiting cards used to be an indispensable attribute of the etiquette and the rules of their use were as sophisticated as those of cutlery.

在过去，名片是礼仪中不可或缺的一部分，其使用规则就像餐具的使用规则那样复杂。

youdao

Of course, had this been the only blip in his life it would be easy to attribute it to a youthful indiscretion.

FORBES: From Greg Smith To Bernie Madoff To Us

So, while one might be able to attribute some of the defections to the heavy advertising blitz, the fact remains that a healthy chunk of union membership was either available to be persuaded or simply were not in line with the goals of their leadership.

FORBES: Requiem For A Recall: Money Likely Not Key To Walker Win

We might be able to attribute some of these positive developments to the contributions celebrities have made to the campaign to free Burma.

FORBES: 13) Anjelica Huston, Paul McCartney, Jennifer Aniston, Jane Birkin, Sylvester Stallone, Sarah Silverman, Ellen Page, and Will Ferrell - Nominees For Most Outstanding and Most Disappointing Human Rights Work