绳梯，以木桩和棋子掩人耳目。
ROPE LADDER with wooden rungs disguised as chess pieces.
youdao
有一种微笑，叫掩人耳目。
There is a smile, called stealth.
史密斯博士离开时说这次调查只是为掩人耳目。
As Dr Smith left he said that the inquiry was something of a red herring.
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