B-18：be no picnic 不是件轻松的事
A:How long have you been in America?
A：你在美国几年了？
B:For more than five years.
B：五年多啦。
A:Do you think it's easy for a Chinese to get accustomed to the western culture?
A:你认为让一个中国人适应西方文化难不难？
B:It's no picnic.
B：不是一件轻松的事。
