Pco
[醫][=platelet cyclo-oxygenase]血小板環化（加）氧酶
??? 情景例句
I'm sick of waiting around like this.
我對這樣干等著感到厭煩。
I'm not strong enough.
我還不夠強壯。
Finding planets is proving hard enough, but finding life on them will prove infinitely more difficult.
尋找行星證明相當困難，但是要在行星上發現生命會變得無比艱難。