坦克停了下来，长长的炮管转过来瞄准了山脊。The tank stopped with the long snout of its gun turned to the ridge.火焰温度较低, 因而可使炮管寿命较长.The flame temperature is lower, thus giving a longer barrel life.二战时期的重型火炮的炮管,也是这么工作的.The heavy gun barrels of W...
壮年期的失望接替青年期的幻想.The disappointment of manhood succeeds to the delusion of youth.精粹来说,它是人类从青年期到成熟的过渡期.In essence it is humanity's transition from adolescence to maturity.但是自我同一性在青年期的发展却有着最为重要的意义.But It has the most im...