common requisites in constitution of crime

例句：

1. 1. The common cold is a very common disease.
   普通感冒是一种非常常见的疾病。
2. 2. Common sense tells us that the earth revolves around the sun.
   常识告诉我们地球绕着太阳转。
3. 3. Common practices in this area are to plant trees and keep the environment clean.
   该地区的常见做法是种植树木并保持环境清洁。