The colorful agates are engraved for pursuing lofty spirit.绚丽的玛尼石,镌刻着崇高的精神追求.Today, Earth teems with thousands of kinds of minerals, from agates to zircons.现在, 地球上到处是各种各样的矿物, 从玛瑙到锆石应有尽有....
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...
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 ...
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....