Unless in uniform, he doesn't look like a policeman.
除非穿上制服,要不他看起来不像警察。
A drowning man will catch at a straw.
溺水者见草也要抓;急何能择。
and there is a very firm rule that the bank has no right or authority to pay out a customer's money on a cheque on which its customer's signature has been forged.