每天晚上回家时，他都急忙拿上横锯或拔钉锤。
Each evening he came home, eager to take up his crosscut saw or claw hammer.
这个困难度在于要在竹子里挖洞，因为竹子纤维是直线的，所以这样锯不好，但是横著锯就简单了。
The difficulty is to carve a hole in the bamboo, because the grain runs straight, so it's hard to cut it this way, but easy to cut in across the grain.
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