Forty-thousand children a day die from preventable diseases.每天有4万个孩子死于本可以预防的疾病。Children are still dying in their millions from preventable diseases.仍有数以百万计的儿童死于可预防的疾病.Most common health upsets that spoil a holiday are ea...
这些措施听得都让人耳朵生茧了。Measures like these sound wearily familiar.一周后蝴蝶破茧而出,绚丽夺目.A butterfly emerged in its full splendour a week later.冬天多数虫子作茧.Most worms cocoon in winter....
顶板冒落 、 巷道底鼓和矿柱破坏是采矿过程中的重要岩石力学问题.Roof falling, floor heave of roadway and pillar failure are important rock mechanical problems in mining.工程实例表明注浆是一种通过冒落区的有效办法.The engineering cases show that grouting is an effective way ...