Return the enclosed Donation Form today in the prepaid envelope provided.请于今日将随函附上的捐款表格用所提供的邮资预付的信封寄回。The envelope has been tampered with and then taped shut again.信封被人动过手脚，然后又用胶带封上了。Liz picked up the blue envelope and t...
Does life exist on other planets?其他行星上有生命吗？Which planets can sustain life?哪些行星可以维持生命的存在？Asteroids, also known as " minor planets ", are numerous in the outer space.小行星, 亦称为 “ 小型行星 ”, 在外太空中不计其数....
coast的近义词有：bank, beach, coast, shore, seaside。下面这些名词均含有"岸"的含义：bank：多指有一定坡度的河岸、湖岸或堤岸。beach：指倾斜度小，被海、湖或河水冲刷而有沙或卵石积存的地方。coast：地理学上的名词，专指被视为边界的沿海陆地的尽头。shore：指紧靠大湖泊或海洋的陆地边缘或靠海的休养地。seaside：尤指疗养地、游览地区的海边。...
The main classes of materials are metals, polymers, ceramics, and composites.材料的主要分类为金属 、 高聚物, 陶瓷, 及合成材料.Silane coupling agents are also used in many commercial sand - epoxy - type composites.硅烷偶联剂亦用于许多通用的砂子环氧型复合材料中.Many...