Obama's campaign sent out a fundraising letter contending that "this kind of attack is becoming a pattern as Clinton's support declines."

奥巴马的竞争团队承认，“随着希拉里支持率的下降，这种抹黑对手的把戏已经成了一个定势。”

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An S-twist yarn is one in which the fibers follow a spiral pattern parallel to the center bar of the letter s.

捻的纱线中的纤维成螺旋状并与字母s中间的斜杠平行。

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Use the tasks of digit and letter copying, and the tasks of pattern and letter comparison to measure processing speed.

用数字抄写任务与字母抄写任务、字母串比较任务与符号串比较任务考查加工速度；

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Their letter says the new treatment pattern of palliative care, based on experience at a Liverpool hospice is being rolled out into hospitals and nursing homes.

BBC: 'Crisis' over terminally-ill care

In their letter to Starr, the GOP senators cited what they called "a disturbing pattern of contradictory, incomplete or inaccurate testimony" from a number of witnesses.

CNN: AllPolitics - Whitewater Witness Describes Contributions