standby

待命、待命狀態常用於 on standby

Two ambulances were kept on standby during the whole event.

活動全程都有兩輛救護車待命。

備用品、常備品

Canned tomatoes are a useful standby for quick dinners.

番茄罐頭是趕時間做晚餐時很好用的常備品。

可靠的人、得力助手

She has been our standby whenever the office gets busy.

每次辦公室忙起來，她都是我們最可靠的人。

候補機位、候補

We flew standby and finally got seats on the last plane.

我們用候補機位，最後搭上了最後一班飛機。

備用的

The hospital switched to its standby generator during the blackout.

停電期間醫院改用備用發電機。