Some of these droughts must have been severe.有一些旱灾想必是严重的.Droughts and accentuation of soil erosion cause havoc in such areas , making their rehabilitation extremely difficult.旱灾和严重的土壤侵蚀造成巨大的破坏, 恢复起来极为困难.He told a press c...
他们通过无线电证实她在营救幸存者。They confirmed by wireless that she was picking up survivors.船长发无线电说船着火了。The captain radioed that the ship was on fire.英国广播公司刚刚成功地演示了一套新的数字无线电传输系统。The BBC has just successfully demonstrated a new digital...