“凹入”造句

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 and concealed.