obstructionist
妨礙者
Ob·struc·tion·ist, n. One who deliberately hinders progress; one who obstructs business, as in a legislative body. -- a. Of or pertaining to obstructionists; causing obstruction; as, obstructionist tactics. [Recent]
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obstructionist
n : someone who systematically obstructs some action that others
want to take [syn: obstructor, obstructer, resister,
thwarter]