ADVERB | PREPOSITION | PHRASESADVERB➤precariously把⋯置於危險處◇The hotel was perched precariously on a steep hillside.旅館坐落在陡峭的山頂,位置險峻。PREPOSITION➤on棲息在⋯上◇The birds perched on nearby buildings.鳥兒棲息在附近的建築物上。PHRASES➤be perched high above sth, be perched high on sth高高地位於⋯之上/⋯上面◇The castle is perched high above the valley.城堡高高地矗立在山谷之上。➤be perched on the edge of sth, perch on the edge of sth處於/被置於⋯邊緣◇I perched on the edge of his desk to listen to him.我坐在他書桌的邊沿聽他講話。➤be perched on top of sth, perch on top of sth處於/被置於⋯頂部