二鼓，即二更的意思，古代夜晚用鼓打更，因此二更天也称为二鼓。 黄昏 一更 一鼓 甲夜 19-21点 人定 二更 二鼓 乙夜 21-23点 夜半 三更 三鼓 丙夜 23-1点 鸡鸣 四更 四鼓 丁夜 1-3点 平旦 五更 五鼓 戊夜 3-5点
阿炳的父亲教他演奏许多乐器，如鼓、笛子和二胡，17岁时，阿炳就因他的音乐才能而闻名。
Abing's father taught him to play many musical instruments, such as the drums, dizi and erhu, and by age 17, Abing was known for his musical ability.
他在亚利桑那州的瓦丘卡堡(Fort Huachuca, Ariz .)接受安全检查(译注：security clearance，确认是否忠诚)并受训成为情报分析员。及后获派往纽约州，鼓堡(Fort Drum, N.Y.)，第十山地师第二旅。
He was granted a security clearance and trained as an intelligence analyst at Fort Huachuca, Ariz., before being assigned to the Second Brigade 10th Mountain Division at Fort Drum, n.y..
在二维流化床试验装置上，对由大颗粒物料组成的密相鼓泡流态化床进行了试验研究。
On the equipment of two dimensional fluidized bed, we were primarily engaged in experimental research on coarse particle dense bubbling fluidized bed.
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