But taking one with another , because condition of sichuan coal natural resources is poor , natural disaster is serious , structure of the sources of energy is occurrent great change .

但总的来看,由于四川煤炭资源条件差,自然灾难严重,一次能源结构正在发生重大变。

Look around current world , international condition is occurrent profound change , the trend of world much polarization and economic globalization develops eclectically in music , change quickly of progress of science and technology , comprehensive national power competes .

环顾当今世界,国际局势正在发生深刻变化,世界多极化和经济全球化的趋势在曲折中发展,科技进步日新月异,综合国力竞争。

Say commonly , tachycardia or dou xingxin had used occurrent antrum sex delay and arrhythmia , abiogenesis period before contractive , to the heart the quantity that discharge blood and human body do not have how old influence .

一般说来，偶然发生的窦性心动过速或窦性心动过缓及心律不齐，偶发的期前收缩，对心脏排血量及人体没有多大的影响。