A long, narrow saw set in a frame.

有框之长条锯。

A two-man crosscut saw.

双人锯。

To saw with a whipsaw.

以长条锯锯；以双人锯锯。

To defeat or get the best of somebody in two ways at once, as in faro, by winning two different bets in a single play.

同时使(某人)在两方面吃亏或在两方面失败；在同一局牌戏中击败(某人)两次。