集中注意力的能力对于学习、记忆和复杂任务的表现至关重要。
Love is the only thing that makes life bearable, but it is also the source of our greatest pain.
海,海,海。它翻滚着,翻滚着,呼唤着我。
To every action there is always opposed an equal reaction; or, the mutual actions of two bodies upon each other are always equal, and directed to contrary parts.