那水呢,不但不结冰,倒反在绿萍上冒着点热气,水藻真绿,把终年贮蓄的绿色全拿出来了。天儿越晴,水藻越绿,就凭这些绿的精神,水也不忍得冻上,况且那些长枝的垂柳还要在水里照个影儿呢!看吧,由澄清的河水慢慢往上看吧,空中,半空中,天上,自上而下全是那么清亮, ...
Modern life makes us tired, right? But research from societies in Africa and South America suggests people in the ancient world slept only 6.5 hours a night.
为什么全国最容易中风的人,在东北,高血压,脑血栓,脑梗死,脑出血,脑血管病,脑血管 ...
CPB2025年第1期编辑推荐文章,敬请关注!COVERGate-tunable high-responsivity photodiode based on 2D ambipolar semiconductorWentao Yu(于文韬), Long ...