at running speed; very fast
以跑步方式；迅速地
he disappeared at the double.
他很快就消失了。
bend over into a stooping position
彎腰
a gamble to decide whether a loss or debt should be doubled or cancelled
以已輸?shù)臄?shù)額作為最后賭注（或者多輸一倍，或者與贏家清帳）
To bend suddenly, as in pain or laughter.
彎腰：因疼痛或大笑等彎下身子
To share accommodations meant for one person.
同宿一室
Immediately.
立即
In double time.
雙倍