Flyash
粉煤灰
🗣️ 情景例句
So good to see you all!
看到你们大家真高兴！
One good mother is worth a hundred schoolmasters.
一个好的母亲顶得上一百个教师。
He explained that he had tried to fix the air-line to the supply line that ran round the port but could not because the fittings did not match.
他解释说他想供气管安装到铺设在码头周围的供应管上，但因为接头不相配而接不上。