1.grind sth (down/up)/grind sth (to/into sth) 将某种东西磨成粉末
to grind coffee/corn 将咖啡/谷粒磨成粉
例句：There's a way to actually grind down and prepare the flour, so that you promote the enzymes within the plant to breakdown the cyanide precursors.
有一种方法是将它们磨碎，做成粉，这样就可以促进它们本身带有,酶将氰化物的前驱体分解掉。

2.polish sth off 很快做完；(尤指)迅速吃光
例句：He polished off the remains of the apple pie.
他把剩下的苹果派赶快吃完。

3.a hint of 少许，一点点
例句：With even a hint of one false answer, dramatically modify your idea or better yet, abandon it and start over.
即使对方的答案有一点点错误，巧妙地转换调整你本来的想法或使它变好，并且忘记它重新开始。

4.add to 增加
例句：The bad weather added to the shipwrecked sailors' difficulties.
恶劣的天气增加了失事船只的船员们的困难。