It was a long and stormy voyage, and they made me work my passage without pay, as a common sailor.
这是一次漫长的暴风雨之旅，他们让我做一名普通的水手，以劳力抵船费。
It was once common to regard Britain as a society with class distinction.
人们曾经普遍认为英国是一个有阶级差别的社会。
Prior to the new study, little was known about the risks of getting directly infected by common respiratory viruses, such as the flu or common cold, on an airplane, the researchers said.
研究人员说，在这项新研究之前，人们对于在飞机上直接感染常见的呼吸道病毒，如流感或普通感冒的风险知之甚少。
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