(yào, ㄧㄠˋ) important; vital; to want; to be going to; must [CE-DICT]
穿
(chuān, ㄔㄨㄢ) to bore through; pierce; perforate; penetrate; pass through; to dress; to wear; to put on; to thread [CE-DICT]
束
(そく) (n,n-suf) (1) {math} lattice; (n,n-suf,ctr) (2) counter for large bundles (e.g. 10 sheafs of rice, 200 sheets of calligraphy paper, 20 whistling arrows, 100 fish); (3) handbreadth (unit for measuring the length of arrows) [EDICT]
(つか) (n) (1) strut; short vertical post; (2) thickness (of a book minus the cover, a sheaf of paper, etc.); (3) (arch) (See 束・そく) handbreadth; bundle [EDICT]