Mr. Trump and Democratic presidential candidate Joe Biden fired new broadsides at each other today on a day when both men campaigned in Iowa.

特朗普和民主党总统候选人拜登今天相互抨击，二人今天同时在爱荷华拉票。

Ships play very differently from land units: they have to be manoeuvred with the wind in mind, they fire massive broadsides at right angles to their direction of movement.

船舶的指挥不同于地面单位：他们必须学会操纵风向，他们沿射击的宽边成直角方向移动。