His family is a nuclear family with three generations living together under one roof.
他的家庭是三代同堂住在同一屋檐下。
I could swear I've been here before.
我敢发誓我曾经来过这儿。
I even went out at midnight with a torch and noted with satisfaction (and surprise) that the ants were still swarming around the sticky tape without being able to do anything about it.