1.duel with 决斗

Meanwhile, in the distance, Christian Phalangist militiamen “engaged in an artillery duel with another unit that we were unable to identify.
与此同时，在远处，黎巴嫩右翼基督教民兵“正在和一只不明身份的部队展开一场火炮决斗。
Jackson was also injured during an 1806 duel with famous marksman Charles Dickinson, during which Dickinson shot the future president in the chest.
杰克逊1806年在和著名的神枪手查尔斯·迪金森的一次决斗中也曾受枪伤，那次决斗，迪金森射中了未来总统的胸部。

2.be made of 由…所组成；由…造成

My,it must be made of copper.
哇，这只苹果准是铜做的吧。

It appears to be made of cotton,the Man said.
看起来好像是棉花做的。男人说。