He loses his balance, falls in, and begins splashing and yelling for help.
他失去了平衡，跌进了水中，贱起了水花，他拼命地呼救。
He is eager to catch up with them but loses his balance and falls off his bike.
他渴望赶上他们，但是失去平衡并且从他的单车上落下。
He is eager to catch up with them but loses his balance and falls off his bike.
他渴望赶上他们，但是失去平衡并且从他的单车上落下。
应用推荐