Eratosthenes

基本解釋

This is same Eratosthenes who invented the "sieve" for determining whether a number is prime or not.
Eratosthenes還發(fā)明了確定一個數(shù)是否是質(zhì)數(shù)的“篩子”。
The best of the early measurements of the earth's circumference was made by Eratosthenes.
早期測量地球周長的最準確結(jié)果是由埃拉托斯特尼得出的。
Eratosthenes sieve method is a method to search for all prime numbers less than natural number N(N>1).
埃拉托斯特尼篩法是求不超過自然數(shù)N(N>1)的所有質(zhì)數(shù)的一種方法。
Eratosthenes knew that the distance between Alexandria and Syene was approximately 800 kilometers, because he hired a man to pace it out.
Eratosthenes知道Alexandria和Syene之間的距離約略是800公裡，因爲(wèi)他雇用人用腳一步一步地走而算出來的。
Eratosthenes had the presence of mind to do an experiment, actually to observe whether in Alexandria vertical sticks cast shadows near noon on June21.
Eratosthenes立刻打定主意，竝且馬上就進行實騐：觀察垂直的棍棒在6月21日中午的Alexandria城是否會現(xiàn)出影子。