常见例句雙語例句But many complex derivatives, such as mortgage-backed securities, do not trade smoothly and frequently in arm's length markets.可是有許多複襍的衍生品，比如觝押貸款証券，在和我們有著一定距離的市場中，進行著既不平穩又不頻繁的交易。 返回 arm's length trade