求grain 和 crop 的区别为什么说The United States,the World Bank and the International Monetary Fund encourageddeveloping countries to importgrainproduced cheaply in the U.S.and elsewhereand to focus their farming on exportcrops.

求grain 和 crop 的区别为什么说The United States,the World Bank and the International Monetary Fund encourageddeveloping countries to importgrainproduced cheaply in the U.S.and elsewhereand to focus their farming on exportcrops. crop grain corn 区别如题 grain wheat crop corn 区别不要复制词典里面的啊 cereal、grain、bread crop有什么区别cereal、grain、bread crop查词典都是谷物的意思,但文献中看到特别强调是grain,而不是cereal,三者有什么区别 harvest crop的区别?谢咯 grain和kernel都有谷物、谷粒的意思,请问有什么区别? corn和crop都可作“庄稼”解释,两者有什么区别? rolled grain和flaked grain和是指经过什么样加工的谷物啊, grain的动词意思 GRAIN corn 和 grain 在用法上有什么区别?corn 和 grain 有什么不同?请从用法上举例说明,而不是照抄词典. whole-grain （求翻译） 请问下头层牛皮和全粒面皮革（full grain leather）有什么区别呢? 求专业人士进：是have been increased 还是have increased?两种用法我都看到过,是都可以用无区别还是有区别并且分不同的情况使用?The production of grain has been increased by four times this year.为什么这里用ha it is not surprising that__little worms eat __little grain.为什么填such和so it is not surprising that__little worms eat __little grain.为什么填such和so 减小晶粒的大小为什么可以增加延展性?grain size减小为什么可以增加ductility? 求Damien Rice 的《The rat within the grain》歌词的中文翻译