plankn.厚板；支撑物；政纲条目vt.铺板；用力放下；<口>立即付钱plank under box底楞planked lobster铁扒鸽plank sheathing木板护壁,木望板,木模板Planktosphaerian.浮球藻属(绿球藻科)plank framework板制框架plank check dam木板拦沙坝,木板谷坊plank's constant小线虫plank-buttress板状干基plank rs constant普朗克常数Planktothricoides拟浮丝藻属

1. He scored the board with a pencil and ruler before sawing it.
   他在下料之前先用铅笔和尺在木板上划好了线。