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...
上面酵母是活跃的发酵剂.Top yeasts are Vigorous fermenters.如果说这个种族是块面团,这些人便是发酵剂.These men have been the leaven in the lump of the race.细菌代替酵母成为新的发酵剂,有许多优点.Bacteria which was a new ferment had more advantages than yeast....
《人民画报》往往一到报摊就销售一空.China Pictorial usually sells out soon after it hits the stands.她不会再来这个报摊了.She will never come into the bookstall again.“ 我在车站下层的报摊旁边等你. ”" I'll meet you by the news - stand on the lower level. "...