Stiffened
n. 加强的\\nv. （使）变硬, （使）强硬( stiffen的过去式和过去分词 )
🗣️ 情景例句
Richard says Max is twenty-one inches long. Richard
说Max是二十一英尺长。
How long is Jones Boulevard?
琼斯大街有多长？
Man-made satellites have been sent up into space by many countries.
许多国家都成功地把人造卫星送入了太空。