rod

• We now wish to determine the lengths of these rods when viewed from a moving reference frame .
  现在我们想确定，当从运动的参照系看时，这些杆有多长。
• Venus herself supplies resolution and boldness to boys still subject to discipline and the rod .
  维纳斯向那些仍然受纪律和戒尺约束的男孩子提供了决心和勇气。
• We were given rods with three separate hooks, and once i caught three fish at the same time .
  人家给我们的钓竿上装有三个分叉的钓钩，有一回，我一次就钓上来三尾鱼。
• He never had an ache or pain, ate his food with gusto, and ruled his brothers with a rod of iron .
  他一向无病无痛，吃东西总是津津有味的，用强硬手段来管他的兄弟们。
• Heat is said to reach the cooler end of the rod by conduction along or through the material of the rod .
  于是我们就说，热沿着（或经过）棒的物质传导到棒的较冷的一端。