例句 /

The development of hybrid rice is always a focus of attention of agriculture science and research. from nothing to nowadays existence, hybrid rice in high latitude area experienced a long and hard studying process.

The development of hybrid rice is always a focus of attention of agriculture science and research. from nothing to nowadays existence, hybrid rice in high latitude area experienced a long and hard studying process.

摘要杂交水稻的发展一直是农业科研关注的焦点,高寒地区的杂交水稻从无到有,并经历了漫长的艰苦研究历程。