breeding field造句

• Scatted in the japanese sea and east china sea , which is also the spawning and breeding field of the north pacific ocean squid
  产地产季主要分布在日本海，中国东海是紫鱿鱼的产卵场与越冬场。
• Now , the general tendency in the world freshwater fish breeding field is : the change from " extensive " to " intensive " . but in our country , the actuality of freshwater fish breeding is : low unit production rate little economic benefit severe pollution bad sustainability
  世界淡水养殖业“由粗放型向集约型转变”的总趋势，引出了对我国淡水养殖业“单位产量低、效益低、污染严重、可持续性差” ? ?这一现状的思考。