Notice that we added a couple of parameters to allow a user to change the name of the ruler and to specify the length.
注意,我们添加了两个参数,以便用户可以更改标尺的名称并指定其长度。
Notice that we added a couple of parameters to allow a user to change the name of the ruler and to specify the length.
注意,我们添加了两个参数,以便用户可以更改标尺的名称并指定其长度。
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