And how would it be possible to check whether the jigsaw pieces had been assembled correctly?
And how would it be possible to check whether the jigsaw pieces had been assembled correctly?
怎么可能检测这些锯齿样的小片段已经被正确连接了呢？
And how would it be possible to check whether the jigsaw pieces had been assembled correctly?
怎么可能检测这些锯齿样的小片段已经被正确连接了呢？