钢瓶是中空的管道,封闭的底部是凹入的,这样可以直立起来.A cylinder a hollow tube a closed concave base that permits the cylinder to stand upright.水平过渡交叉挡板应扣住, 凹入并隐藏.Horizontal intermediate cross rails, which are required for locks, will be recessed...
这公园在水边的小山上.This park is located on the hill by the waterside.水边的这片草滩,是许多水鸟的栖息地.The grassland along the river is the habitat of many waterfowls.我们会象水边的树那样屹然不动.We shall not be moved - a tree standing by the water....