Duplexer
[电] 双工器
🗣️ 情景例句
For example, did you know that 1 in 4 teenagers has tried marijuana?
比如，你是否知道4个青少年中就有1位曾经吸过大麻？
Step after step the ladder is ascended.
按部就班，循序渐进。
Put down the gentleman's address.
把这位先生的地址写下来。