您要查找的是不是：
- under plain cover,ie in an envelope without any special marking 在普通信封中（无特殊标记）
- Under plain cover, ie in an envelope without any special marking 在普通信封中（无特殊标记）
- under plain cover 没有注明寄发人姓名、地址及内容,用没有注明商号、装有何物的封袋邮寄
- The Gran Chaco is an alluvial plain covered with grass and hardwood forest in northeastern Argentina, northwestern Paraguay and southeastern Bolivia. 大查是一个冲积平原上复盖着草和阔叶林在阿根廷东北部;西北巴拉圭和玻利维亚东南部.
- The Everglade is a watery plain covered with saw grass that's home to numerous species of plants and wild life. 这个被锯齿草覆盖的潮湿的平原是很多动植物的家。
- Welcome to Everglade National Park.The Everglade is a watery plain covered with saw grass that's home to numerous species of plants and wild life. 新学期伊始，我将用前两节课的时间为你们做一些关于电影基本概念的背景讲座。
- There was a general disappointment among the passengers, who, without reckoning the delay, saw themselves compelled to trudge fifteen miles over a plain covered with snow. 此外，所有的旅客也都感到很丧气，耽搁时间暂且不说，旅客还得在这冰天雪地里步行十五六英里。
- Crimes committed under cover of patriotism. 打著爱国的旗号犯下的罪行。
- The soldiers crept forward under cover of darkness. 士兵在夜色的掩护下匍匐前进。
- She and I can't live under the same roof. 她和我不能住在一起。
- The enemy army crumpled up under our attacks. 敌军在我军的攻击下垮了。
- The firm will go under unless business improves. 生意若无起色，公司非垮不可。
- The criminal escaped under the cover of darkness. 犯人趁着天黑逃跑了。
- We travelled under cover of darkness. 我们在夜幕掩护下行进。
- The baby's legs flailed under the quilt. 小孩的两条小腿在被子下面乱动。
- The soldiers crept forward under the cover of darkness. 士兵在黑夜的掩护下向前爬行。
- The fox went to ground under a rocky escarpment. 狐狸钻进了石崖下面的洞里。
- The criminal escaped under cover of darkness. 那罪犯在夜幕的掩护下逃走了。
- I will pay nothing under compulsion. 在强迫之下我分文也不愿付。
- The chair sagged down under the fat man's weight. 椅子经这胖人一坐便压弯了。
