overboard

1. ADV If you fall overboard, you fall over the side of a boat into the water. 从船上 (落) 入水中[ADV after v]

His sailing instructor fell overboard and nearly drowned during a lesson. 他的帆船教练在一次课上落水，差点溺死。

2. PHRASE If you say that someone goes overboard, you mean that they do something to a greater extent than is necessary or reasonable. 过分[非正式]

Women sometimes damage their skin by going overboard with abrasive cleansers. 女性有时因为过度使用研磨型的洁面乳而损害了皮肤。