双人房间英文是double room。
double room是由"double"和"room"组合而成。double是形容词，表示"双倍的"，room是名词，表示"房间"。因此double room就是"双人房间"的意思。
例句：
Can you book two double rooms for us for next week?
请问您能为我们预订下周的两个双人房间吗？
I would pke to upgrade my single room to a double room.
我想将单人房升级为双人房。
The hotel offers both single rooms and double rooms for guests.
酒店为客人提供单人房和双人房。