Diphthongs
n. 双元音( diphthong的复数形式 )
🗣️ 情景例句
with the school board,
和联合校董会一起，
Has he studied French very long?
他学习法语很长时间吗？
If they are not brought to the surface soon they may lose their lives.
如果不把他们尽快救到地面上来，他们就有可能丧生。