n.系曳繩的橫木

He climbed over the singletree, steadying himself with a hand on the burro's white rump. 他爬到馬車前的橫木上，一只手放在毛驢白色的屁股上，讓自己坐穩(wěn)。

"It is a most marvellous happening," Singletree, Darnley &Co. wrote Martin, "a critical philosophic essay selling like a novel. “此事非常出色，”欣格垂、達(dá)恩利公司給馬丁的信上說，“哲學(xué)評論竟然能如小說一樣暢銷。

And promptly as the United States mail could deliver and return, came Singletree, Darnley &Co.'s check for five thousand dollars. 于是，欣格垂、達(dá)恩利公司就以美國郵遞回函所能達(dá)到的最高速度寄來了五千元的支票一張。