Agenerationago, it was thought that babies born this small could not survive.
在上一代以前，人们认为这么小的新生儿是没法存活的。
《柯林斯英汉双解大词典》
2
Practically unheard of agenerationago, the discounts have become a routine part of many businesses—as common as color televisions in motel rooms and free coffee on airliners.