search-and-rescue antennas
/ˈsiːm ɐlˈaʊəns/
n
English · search-and-rescue antennas中文 · 搜救天线Español · antenas de exploración y rescateFrançais · capteur de signaux de détresse
意味：Device that picks up distress signals emitted by ships or aircraft and makes it possible to determine their location.