我们的炮弹一发，便听到可怕的哀号声和尖叫声。Our artillery opened up and we heard a fearful wailing and screeching.她听到警报器发出可怕的尖叫声。She heard the sirens scream their unearthly wail.喊叫声变成了惊恐的尖叫声。The shouts changed to screams of terror....
The armed forces have launched offensives to recapture lost ground.这支武装部队已发动进攻要夺回失去的阵地。He recounted how heavily armed soldiers forced him from the presidential palace.他讲述了自己是怎样被全副武装的士兵从总统官邸里赶出来的。They were armed with spea...
Downsized weapons would probably offer greater utility in less populated areas.减量化的核子武器或许比较适用于可提高它在人口较少的地区.The car makers downsized the suvs when fuel became very expensive.燃油越来越贵,汽车制造商压缩了SUV的产量.Morepeople are downsized,...
Stem cells a lesson from dedifferentiation.干细胞:从脱教训.The rest of phloem also produced callus through dedifferentiation. In addition, there was callus from xylem.残存的韧皮部也可以脱分化形成愈伤组织, 此外, 还存在愈伤组织源于木质部的情况....