Pods
abbr. 资料库系统规则（Principles of Database Systems）
🗣️ 情景例句
Columbia's a terrific school.
Columbia，是一所很棒的学校。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
Even if a piped water supply is safe at its source,
既使管道供水系统在水源处是安全的，