That included trawling through thousands of company e-mails .
调查包括仔细查阅数千封公司电子邮件。
Bottom trawling can target cod down to 200 meters or so .
拖网作业则可捕到200米甚至更深处的鳕鱼。
Congressmen will have to contend for the first time with good-governance groups , and with their political enemies , trawling through their investments .
