她到得早，不过话又说回来了，她总是早到。
她的确很努力，不过话又说回来了，她一向都这样，不是吗？
She is very hard-working indeed, but then again, she always has been, hasn't she?
不过话又说回来，微波炉的磁控管[2]最初就是为军用雷达[3]设计的。
Thus, things turn full circle, for the original microwave oven was based on the magnetron from a military radar.
应用推荐