We shall have to dig under the river to lay the sewage pipe.
"为了铺设污水管道,我们必须在河床下面开一条通道。"
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Concerned about crime and safety, and wanting a more attractive setting for their homes, the three families decided to install a security gate at the street's entrance; repave the street's surface; and enhance the lighting and landscaping.
考虑到犯罪和安全问题,并想要一个更吸引人
居住环境,三家人决定在街道
入口处设置一扇安全门;重新铺设路面;并加强照明和绿化。