🗣️ 情景例句
Say good-bye to Richard.
替我向Richard说声再见。
Know something like the palm of one's hand.
熟知其事，了如指掌。
The children were running to move the bag of rice when they heard the sound of a motorbike.
孩子们跑去搬那包大米，这时他们听到摩托车的声音。