体壁有外环形肌和内纵行肌.The body wall has outer circular and inner longitudinal muscles.用伊红和 马洛赖氏 三色法染色可见体壁尤其在腹壁的折叠处及膜翅壁中存在着胶原纤维.There are collagenous fiber in integument especially integument and the hymenopterous integument disco...
受到经济萧条的影响,制造业急剧衰退.Manufacturing fell sharply under the impact of the recession.公司认为他们正在摆脱经济萧条的影响，声称订单仍然让人满意。The company believes it is bucking the recession and says orders continue to be satisfactory.这个行业以前从未有过必须同时应付战争和...
The island is surmounted by a huge black castle.岛的最高处耸立着一座巨大的黑色城堡。She was well aware of the difficulties that had to be surmounted.她很清楚必须克服哪些困难。I think most of these obstacles can be surmounted.我认为这些障碍大多数都是可以克服的....