We believe that a force of about one hundred pounds was needed to pull the string all the way back on a long bow.

我们认为，拉动长弓上的弓弦大约需要100磅的力。

youdao

The long bow was most likely discovered when someone found out that a five-foot piece of wood made a better bow than a three-foot piece.

长弓最有可能是在有人发现一块五英尺长的木头比一块三英尺长的木头能制作更好的弓时被发现的。

youdao

The long bow was most likely discovered when someone found out that a five-foot piece of wood made a better bow than a three-foot piece.

长弓最有可能是在有人发现一块五英尺长的木头比一块三英尺长的木头能制作更好的弓时被发现的。

youdao