每种动物都有自己的生态位.Each animal has its ecological niche.生态位: 生物体所占据生境的最小单位.Niche: Smallest unit of a habitat that is occupied by an organism.生态位战略之二是生态位分离和生态位扩充战略.Second niche strategy is niche separation and niche expansion s...
将用钢缆替换磨损的绳索。Steel cable will be used to replace worn ropes.替换零件怎么都找不到。Replacement parts couldn't be found for love or money.他删掉fellowsubjects，插入替换词fellowcitizens。He crossed out "fellow subjects", and instead inserte...
Cortes introduced chocolate to Europe.议会把巧克力带到了欧洲.But it was the Spanish explorer Cortes who understood that chocolate could be a valuable investment.但是,只有西班牙探险家HernandoCortes懂得巧克力可能是值得投资的.In 1518 Cortes asked the Spanis...