(yǐ, ㄧˇ) to use; according to; so as to; in order to; by; with; because; abbr. for Israel [CE-DICT]
前
(ぜん) (n-pref) (1) (See 前・まえ) the last (i.e. immediately preceding) (e.g. "the last mayor"); previous; one-time; former; (2) (before the name of an era) pre- (e.g. "premodern"); (adj-no,n) (3) before; earlier; (P) [EDICT]
(まえ) (n-adv,n-t,suf) (1) (See 前・ぜん) ago; before (some event); previously; (minutes) to (the hour); (2) in front (of); before (e.g. the house); (3) head (of a line); front (e.g. of a bus); fore part; (4) in the presence of; (5) (See 人前・にんまえ) helping; portion; (6) privates; private parts; (P) [EDICT]
(qián, ㄑㄧㄢˊ) before; in front; ago; former; previous; earlier; front [CE-DICT]
买
(mǎi, ㄇㄞˇ) buy [CE-DICT]
得
(う) (v2a-s,vt) (1) (See 得る・うる) to get; to acquire; to obtain; to procure; to earn; to win; to gain; to secure; to attain; (2) (as 〜することを得, etc.) to be possible [EDICT]
(とく) (adj-na,n) (1) (also written as 徳) profit; advantage; benefit; gain; (2) {Buddh} rebirth in paradise, entering nirvana; (P) [EDICT]
(dé, ㄉㄜˊ) to obtain; to get; to gain; to catch (a disease); proper; suitable; proud; contented; to allow; to permit; ready; finished [CE-DICT]
(de, ㄉㄜ˙) structural particle: used after a verb (or adjective as main verb), linking it to following phrase indicating effect, degree, possibility etc [CE-DICT]
(děi, ㄉㄟˇ) to have to; must; ought to; to need to [CE-DICT]