linear cleavage

例句：

1. 1.The engineer made a linear cut in the wood to make it stronger.
   工程师在木头上做了一个直线切割，使其更坚固。
2. 2.The carpenter used a straight cut saw to remove the old boards.
   木匠用直切锯去掉旧木板。
3. 3. The scientist found a straight line cleavage in the rock formations.
   科学家在岩石构造中发现了直线切割。