英汉双语例句-生物医药大词典

The column may not have a PRIMARY KEY or UNIQUE constraint.

中文意思：
这个字段也许没有一个主键或唯一的限制。

以下为相关句子列表(点击查看，可以看对应的解释）：

	The colours used are flat and unvaried.			使用的颜色既单调又无层次。
	The colt broke 3 bones in its right ankle in May, then got an infection in its left leg.			巴巴拉五月的时候右脚踝摔断了三根骨头，随后左脚又受到了感染。
	The colt had run beneath the wagon of the other farmer.			小马一出世便跑到另一个农夫的马车下面。
	The colt shied at the fence and refused to jump over it.			这马驹到障碍物前害怕不敢跳过去。
	The colt was crossing the river when a squirrel jumped down a tree and stopped him.			小马听了老牛的话，正准备过河，突然丛树上跳下一只松鼠，拦住它大叫道：小马，别过河！
	The column may not have a PRIMARY KEY or UNIQUE constraint.			这个字段也许没有一个主键或唯一的限制。
	The column may not have a default value of CURRENT_TIME, CURRENT_DATE or CURRENT_TIMESTAMP.			这个字段也许没有一个默认的当前时间，当前日期或当前时间戳的值。
	The column should part easily.			柱应该很容易地折断。
	The column, four abreast, stretched out over one kilometre.			队伍4个人一行，长达1公里以上。
	The columnist holds the colorful column of the colonial newspaper.			那位专栏作家主持殖民地报纸的多彩专栏.
	The columns themselves are separated by commas.			列之间用逗号分隔。