To help the reader better understand a complicated process, （） is（are）very often used.

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• Cloisonné production involves very complicated techniques， with more than（）working procedures.
• Cook Ding still（） cautious, especially when he came to the complicated joint.
• The fable The Donkey in Qianzhou may reflect Liu Zongyuan’s complicated inner world following the failure of his political strug
• You should not round off complicated statistics.
• When using complicated charts and diagrams in your PPT, it’s important to give your audience time to read and then explain them