I just heard what you did. You did it without consulting me. Yes, I talk...

Permanent: to be fixed or unchanging, the opposite of temporary.永久（性）的，永...

Resume: to continue or start again, after a pause.重新开始; 继续; After a shor...

Scientists now believe that the Earth's magnetic field is about to rever...

There are several fundamental forces that hold our universe together.基本的...

Guess what? I've just won a lottery, 50 million dollars. You are kidding...

Sincere: to be honest and trust-worthy. I think she was being sincere, s...

Silly: foolish or stupid or ridiculous, the opposite of serious.蠢的; 糊涂的;...

As we have seen, much of the wealth of the US is concentrated in just a ...