在括号里填上合适的长度单位。,^)G-\:b'G0p)s
铅笔长18+s0B3N:L/~,^)G-\:b'G0p)s
一棵大树高10(M3j'A,L,[3t,^)G-\:b'G0p)s
曲别针长33E2w0T(a7e.N9z.~6a,^)G-\:b'G0p)s
一张儿童床长2(H3L,x/B/W4F5W2s9E,^)G-\:b'G0p)s