cos和cosh的區別:意思不同，讀音不同。
cosh
英 [kɒʃ] 美 [kɑːʃ]
n.(用作武器的）金屬短棍，實心橡膠棒。
vt.用短棒打用短棒之類的東西打。
cos
英 [kəz] 美 [kəz]
conj.因為。
abbr.(書寫形式）餘弦。
Our side was under the cosh for most of the second half.
The home team was soon under the cosh.
主隊很快就陷入被動。
Can I just ask something' cos I'm really quite interested in this.
我能不能問個問題，因為我對這個真的很感興趣。
They wouldn't serve me in any pubs' cos I looked too young.
這些酒吧都不讓我進，因為我看上去太小了。
品位站
