The ship was buried, beyond retrieval, at the bottom of the sea.船已葬身海底，无法打捞。Its real purpose is the launching and retrieval of small aeroplanes in flight.它真正的用途是发射和收回飞行中的小型飞机。A special retrieval team arrived from Washing...
Dongpo and Fo Yin were good friends, and they liked to poke fun at each other.苏东坡和佛印和尚是很好的朋友, 但是两人也喜欢彼此嘲弄一番.The future fo operations research applied to management decisions warrants enthusiasm.在管理决策中应用作业研究的前景是乐观的.Freque...