嘻哈grinding是：無休止的意思。
英 ['ɡra?nd?]美 ['ɡra?nd?]
adj.磨的；碾的；磨擦的；無休止的。
動詞grind的現在分詞形式。
In practice, roller press is the delegate of pressing pre-grinding which is the leading of pressing grinding.
實際生產中，以輥壓機為代表的料床預粉磨系統是料床粉磨的主導。
It's a long grind to the top of that particular profession.
爬到那種行業的最高位置要經過漫長的艱苦奮鬥。
Parts of the machine were grinding together noisily.
機器零件摩擦發出刺耳的聲音。
Don't let them grind you down.
別讓他們欺壓妳。