He died, literally , at the chalkboard at age 83.他过世了, 83岁的时候, 在黑板前.Then one morning we were working math problems at the chalkboard.后来有一天早晨,我和玛丽在黑板上写下了数字题目.The map was drawn on chalkboard with ink - markers.那张地图用记号笔画在一块...
维生素B可以促进红细胞再生。Vitamin B assists in red-blood-cell regeneration.细菌一进入血液里，就附着在红细胞表面上。Once in the bloodstream, the bacteria adhere to the surface of the red cells.红细胞大致呈圆盘状。Red blood cells are roughly the shape of a disk....
在更多人质获得自由之前他们期望看到对方也有相应的表示。They expected a reciprocal gesture before more hostages could be freed.大多数空缺属于高层职位，要求具备相应的资历。Most vacancies are at senior level, requiring appropriate qualifications.对讲机发出嗡嗡声，他按下了相应的开关。The inte...