Backflooding
地下水逆流
🗣️ 情景例句
and from the University of Michigan in 1956.
一九五六年从Michigan大学毕业。
The fire is the test of gold; adversity of strong man.
烈火试真金，困苦练壮士。
For example, you can send information abroad immediately, but mailing a letter might take a week or so.
例如，你能够马上发送信息到国外，但寄一封信可能要大约一周的时间。