Scientists are now trying to rediscover if this is possible.科学家们正在探索这是否可能.Scientists tried out thousands of chemicals before they found the right one.科学家们试验了数千种的化学药品才找到一种合适的。I had visualized scientists as bearded old men...
金星具有沿主轴反向自转的特性.Venus has the distinction of spinning " backward " on its axis.随着曲轴的转动, 曲柄销绕主轴作圆周摆动.As the crankshaft rotates, the crankpin swings in a circle around the shaft.主轴轴承采用进口轴承,高转速,高精度.Imported spindle bearings ...
After touring the hospital, Her Majesty unveiled a commemorative plaque.女王陛下巡视完这家医院后，为纪念匾揭了幕。The Queen unveiled a commemorative plaque.女王为纪念牌匾揭幕。The Queen unveiled a plaque to mark the official opening of the hospital.女王...