The old copy machine hums loudly every time someone prints a large report.

每次有人印大量報告時，那台舊影印機都會嗡嗡作響。

The server room hummed all night while the finance team processed year-end transactions.

財務團隊處理年終交易時，伺服器機房整晚嗡嗡作響。

Passengers could hear the engines humming softly as the plane waited at the gate.

飛機在登機門等待時，乘客能聽到引擎輕輕地嗡嗡作響。