其中一间教室的门方悬挂一条标语，写道“如果你要说英语，嘘！”
A sign above the door of one classroom says "If you have to speak English, whisper!"
另一方面，Ruby具有这三门语言的的共性。
On the other hand, Ruby has common elements with all three of these.
好的，一方面指纹鉴定者认为指纹识别是一门科学。
O.K., on the one hand, fingerprint practitioners state that fingerprint identification is a science.
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