In 1957, the Soviets launched Sputnik 1 into outer space.1957年，苏联人将“斯普特尼克1号”人造卫星送入了外层空间。They have been visited by creatures from outer space.有外星人拜访了他们。radio waves from outer space来自外层空间的无线电波...
釉质是身体中最硬的组织最富于钙质.Enamel is the hardest structure of the body and the richest in Calcium.洗牙会对牙釉质造成伤害 吗 ?Does the meeting that wash a tooth cause harm to enamel?采用维氏显微硬度仪测定经饮料浸泡后牙釉质表面显微硬度的变化.The enamel surface microhardnes...
You and I know how true this is in the African - American community.我们都知道这在黑人社区中是多么的常见.Life for the average African - American has also improved remarkably.即使普通黑人的生活也得到了显著提高.Terry Crews as Hale Caesar, an African - Ameri...
Seller unagree to allowance over 30 c burgher push undesirable.卖方拒绝赔偿30美分以上,再勉强也无用.Certain estates are labelled as undesirable.某些物业被归入不受欢迎之列。Inflation is considered to be undesirable because of its adverse effects on inc...