zhí / wù / xué / jiā / zài / gōng / yuán / lǐ / fā / xiàn / le / jǐ / kē / gāo / dà / de / pǔ / tōng / chì / yáng植物学家在公园里发现了几棵高大的普通赤杨。Botanists found several tall common alder trees in the park.