疱疹往往由1型引起。

Cold sores are usually caused by type 1.

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安全建议往往由报告者和厂商发布于新的日期。

Security advisories will usually be released by vendors and the reporter on the new agreed date.

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事实上，巨大的改变往往由非常简单，非常小的第一步开始。

In fact, big changes usually start with very simple, small first steps.

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But,basically,the news was always given by people with a northern accent, either a Loire Valley accent, and they're very proud, they think they speak the best French, but a Parisian accent.

但基本上,新闻往往是由,有着北方口音的人播报的,这些人要么来自卢瓦尔河谷,他们对自己的出身引以为荣,认为自己法语说的最棒,而不是巴黎人

耶鲁公开课 - 1871年后的法国课程节选

Transplants require donors, and the donor organ is usually not at the same physical location that the recipient is and so jets like this one have become very important in connecting donors to recipients.

移植手术需要供体器官,而供体和受体,往往在不同地方,这就需要一架飞机,将器官由供体所在地送到受体所在地

耶鲁公开课 - 生物医学工程探索课程节选