Libellulidae
蜻科
🗣️ 情景例句
I know so.
我确定知道是这样。
I think it's going to be a nice day.
我想今天会是一个好天。
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。