Massive blocks of apartment flats spring up, many violating building codes to congest the ever-growing suburbs.
大量的公寓楼如雨后春笋般涌现,其中许多都违反了建筑规范,使不断发展的郊区变得拥挤不堪。
英语百科
Leaf spring
A leaf spring is a simple form of spring commonly used for the suspension in wheeled vehicles. Originally called a laminated or carriage spring, and sometimes referred to as a semi-elliptical spring or cart spring, it is one of the oldest forms of springing, dating back to medieval times.