例句與造句

1. A population of a particular species can change its size , age structure , and distribution to avoid or reduce the harmful effects of an environmental stress ( principle of population dynamics )
   對一個特定的物種，其族群可藉由改變其身形大小、年齡結(jié)構(gòu)、地區(qū)分布，以避免或減低不良環(huán)境壓力的危害作用。
2. British economist who wrote an essay on the principle of population ( 1798 ) , arguing that population tends to increase faster than food supply , with inevitably disastrous results , unless the increase in population is checked by moral restraints or by war , famine , and disease
   馬爾薩斯，托馬斯?羅伯特1766 1834英國經(jīng)濟學家，著有人口論（ 1798年） ，認為人口的增長比食物供應(yīng)的增長要快，除非對人口的增長采用道德的約束或戰(zhàn)爭、饑荒和瘟疫加以抑制，否則會導(dǎo)致不可避免的災(zāi)難后果
3. It's difficult to find principle of population in a sentence. 用principle of population造句挺難的