adj.成对的；成双的
动词mate的过去式和过去分词形式.
At thirty, he signed on as first mate with a cargo ship. 他30岁时受雇于一艘货船当了大副。
Our bitch should produce a fine litter. We mated her with John's dog. 我们那条母狗应能生一窝很好的小狗.
