抛: 动词1.(扔; 投掷) throw; toss; fling 短语和例子把帽子抛向空中 throw one's cap into the air; fling one's hat up in the air; 抛救生圈 throw a life buoy; 抛球throw [toss] a ball2.(丢下; 抛弃) leave behind; cast aside; a
Columns not marked as nullable will automatically raise exceptions if you attempt to persist an instance with a null value 如果你试图对没有被标为可空的列赋空值，将会自动抛出异常。
