两层细胞 ( 两胚层 ),中间是凝胶状的中胶层.Two cell layers ( diploblastic ) separated by a gelatinous mesoglea.天边是耀眼的橙红色曙光, 下面点缀着一条凝胶状的淡绿色带子.Dawn came glassy orange , stained from below by a gelatinous band of pale green....
The hostages were freed in the commando raid.在突击队的突袭行动中，人质获释。The commando force joined up with the airborne troops near the captured bridge.在被占领的桥梁附近,突击队和空降部队会合.You know he's a veteran of five successful commando ra...
Pain-killers are very useful in small amounts to bring your temperature down.小剂量的止痛药对于降低体温非常有用。The police are searching for his killers.警方正在搜捕杀害他的凶手。Giant-killers Yeovil became the most successful non-league club in hist...
Normally, such an outward display of affection is reserved for his mother.通常，只有在母亲面前他的情感才会如此外露。British men are often seen as being reserved and unemotional.英国男人常被认为是矜持而冷漠的。Even though I'm quite a reserved person, I ...
I made the book crinkle and black with a mess.我把那本作文选揉皱了,揩黑了.A less careful caress may make it crinkle or crack.倘谁一不小心,就会把她揉皱,捻出裂纹.Wear - resistant and crinkle - resistant first layer as upper.采用头层牛皮, 耐磨,防皱....
A factory making armaments had been bombed the night before and a residential area not far away had been pulverized.前天晚上，一家兵工厂被炸，不远处的居民区也被夷为平地。...the armaments industry.军工产业The money they spent on armaments runs into ten...
他们对放热的化学反应一无所知.They know nothing about exothermic chemical reactions.他们封放热的化学反应一无所知.They exothermic chemical reactions.结果表明,燃气蒸汽联合循环系统利用了燃气侧高温吸热和蒸汽侧低温放热的特点,使得其效率高达51.The result of study shows that the exergy efficiency o...