The axioms adopted by Euelid mere supposed to be self - evident truths.欧几里德用的公理都应看作是不证自明的真理.The theorems should be deduced from axioms by purely logical arguments.定理应该通过纯粹的逻辑的推导而从公理演绎得到.The simplest of the substitute axi...
Somebody lopped the heads off our tulips.有人剪掉了我们郁金香的花冠。She waters the tulips every morning.她每天早晨都给郁金香浇水.She trimmed the stalks of the tulips before putting them in a vase.她在把郁金香插进花瓶之前修剪了花茎....