purchase/ 'pəːtʃɪs /

1.vt.[frm] 
购买

2.noun [frm] [u] 
(act of buying) 购买

3.noun [frm] [c] 
(item bought) 购买物

4.noun [frm] 
to get {or} gain (a) purchase on sth (grip) 牢牢抓住某物