sharpshooter
 US /ˈʃɑːrpˌʃuː.t̬ɚ/
 UK /ˈʃɑːrpˌʃuː.t̬ɚ/
1. 
狙撃手
a person who is skilled at firing (= shooting) a gun and accurately hitting what they are aiming at:
:
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There was an outcry when park rangers decided to hire sharpshooters to cull the herd.