1、
Methods Sixty patients with cerebrovascular accident were divided into two groups randomly.
方法将60例脑血管意外病人按入院顺序单双数随机分成两组，各30例，单数为对照组，双数为观察组；
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2、
The Chinese people stress to send gifts in pairs, for odd numbers are regarded as inauspicious.
中国人送礼物时很强调双数，因为单数被认为不吉利。
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3、
Senators are chosen in state-wide elections held in even-numbered years.
每逢双数年份便举行全州性的选举,选出参议员.
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4、
Dual digital display shows the actual temperature and the setting temperature.
双数码管直接显示实测温度和设定温度.
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5、
6、
Ancient Greek had the dual form but it has merged with the plural form in modern Greek.
古希腊语中有双数形式，但在现代希腊语中已同复数形式合并在一起了。
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