perch poles
(aviation) The indicated airspeed at which a multiengine aircraft's rate of climb with only one engine running is at a maximum.
plural of perch pole
plural of candle in the wind
If there should be.
飼育員たちは熱帯の鳥舎を鳥にとってより快適にするため、止まり木の支柱の高さを調整した。
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