Otec
n. 海洋热能转换系统
🗣️ 情景例句
What do you like about it?
你喜欢它哪一点呢？
Let every man praise the bridge he goes over.
饮水思源。
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，