be back in和be back out是什么意思?

be back in和be back out是什么意思? be back in be back at 区别 back和be back 的区别 be back ,come back和go back 的用法区别. come back 和 be back、get back的区别是什么? 第一题,be back in和be back out是什么意思?求翻译! she -------(be)back in half an hour He will be back in four days i will be back in touch, he _____（be)back in two weeks Be back soon U'll be back “I will be back! Be back home I'll be back be traced back to 用 be back 造句 WE WILL BE BACK