shear Alfvén wave

例句：

1. 1. She sheared the sheep to get a good fleece.
   她剪羊毛以获得好的毛皮。
2. 2. The carpenter sheared the branches off the tree.
   木匠剪掉了树上的树枝。
3. 3. The farmer sheared the sheep for wool.
   农民剪羊毛来获取羊毛。