1.bound to 绑定到；必定

They are bound to take time to readjust after a holiday.
他们肯定需要时间重新适应假期结束后的生活。

There are bound to be teething problems with something so new.
如此新鲜的事物刚开始必然会有些问题。

2.react to 起反应；作出反应

There'dbe no telling how John would react to such news as this.
还不知道约翰听到这样的消息会作何反应。

Someone allergic to milk is likely to react to cheese.
对牛奶过敏的人可能对奶酪也有不良反应。

3.plunge into 投入；跳入；投身于

He braced himself for the icy plunge into the black water.
他做好了准备要跳进冰冷的脏水里。

That peace often looked like a brief truce before the next plunge into war.
那种和平看起来常常像是再次陷入战争前的短暂休战。

4.stare into 凝视

Who do you see when you stare into space?
当你望向太空你会看到谁？

Everyone knows not to stare into the sun.
每个人都知道不要凝视太阳。