奔驰轿车的前部把大门洞穿了。The snout of the Mercedes poked through the gates.她意识到那辆奔驰在跟踪她。She realized that the Mercedes was following her.那辆奔驰开始逼近小货车。The Mercedes began to gain on the van....
This is a Geiger counter for detecting radioactivity.这是一种盖革计数管,用来测量辐射的.A metal called uranium gave off a kind of radiation, which Marie Curie later called radioactivity.一种叫铀的金属发出一种射线, 后来玛丽·居里把这种现象称为放射性.The site was found...