| 单词 | buoyant |
| 例句 | buoyant adjective 1.•a buoyant substance:able to float, floating, floatable. ANT leaden. 2.•a buoyant mood:cheerful, cheery, happy, lighthearted, carefree, bright, merry, joyful, bubbly, bouncy, sunny, jolly | lively, jaunty, high-spirited, perky | optimistic, confident, positive | informal peppy, upbeat. ANT depressed, optimistic. |
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