vt.用尖桩围住(picket的过去式与过去分词形式);
例句:
About twenty workers picketed outside the gate.
约有二十名工人在大门外担任纠察.
They picketed the restaurant.
他们在饭馆外设置纠察.
The workers picketed the factory gates.
工人在工厂大门口设了纠察线.