Warren buffett 's berkshire hathaway has lobbied hard , but so far unsuccessfully , against having to post more collateral for existing trades in its $ 60 billion derivatives book .
The organization has tried unsuccessfully in the past .
组织过去有过失败的尝试。
The american society of reproductive medicine recommends that women under 35 begin testing after trying to conceive unsuccessfully for 12 months .
美国生殖医学学会建议35岁以下的女性在尝试怀孕12月后仍未成功的应该开始接受检测。
Try to think of situations in which you 've used your strengths successfully and times when you 've used them unsuccessfully .
试着去想想你成功利用你性格优势的情境以及你失败的时候。
The fed , which engaged morgan stanley for advice , had shopped around unsuccessfully for a private-sector solution to aig 's problems .
美联储曾雇佣摩根士丹利提交一份解决aig问题的计划,希望出售其独立部门,但没有成功。
The alien invasive species that damage the health of wetland ecosystem include alien invasive weeds , alien marine species unsuccessfully introduced and harmful alien red tide alga that are brought with water ballast .