Passive hub
[计] 无源集线器
🧩 词语组成解析
hub
[hʌb]
n. 轮轴;中心，焦点;（电器面板上的）电线插孔;[计]集线器;
🗣️ 情景例句
and good-bye.
再见。
To look up
仰视
My wife was delighted that things had returned to normal once more.
一切又都恢复了正常，为此我妻子十分高兴。