| 刀不磨要生锈,人不学要落后 | 
dāo bù mó yào shēng xiù , rén bù xué yào luò hòu | 
(proverb) a blade will get rusty if it is not sharpened; a man will fall behind if he doesn't study | 
| 刀 | 
Dāo | 
surname Dao | 
| 刀 | 
dāo | 
knife / blade / single-edged sword / cutlass / CL:把 / (slang) dollar (loanword) / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs | 
|  不 | 
bù | 
no; not so / (bound form) not; un- | 
|   磨 | 
mó | 
to rub / to grind / to polish / to sharpen / to wear down / to die out / to waste time / to pester / to insist | 
|   磨 | 
mò | 
grindstone / to grind / to turn round | 
|    要 | 
yāo | 
(bound form) to demand; to coerce | 
|    要 | 
yào | 
to want; to need; to ask for / will; shall; about to / need to; should / if (same as 要是) / (bound form) important | 
|     生 | 
shēng | 
to be born / to give birth / life / to grow / raw / uncooked / student | 
|     生锈 | 
shēng xiù | 
(of metal) to rust; to become rusty / (fig.) (of a skill etc) to get rusty; to deteriorate | 
|      锈 | 
xiù | 
variant of 锈 | 
|      锈 | 
xiù | 
to rust | 
|        人 | 
rén | 
person; people / CL:个,位 | 
|         不 | 
bù | 
no; not so / (bound form) not; un- | 
|          学 | 
xué | 
to learn / to study / to imitate / science / -ology | 
|           要 | 
yāo | 
(bound form) to demand; to coerce | 
|           要 | 
yào | 
to want; to need; to ask for / will; shall; about to / need to; should / if (same as 要是) / (bound form) important | 
|            落 | 
là | 
to leave out / to be missing / to leave behind or forget to bring / to lag or fall behind | 
|            落 | 
lào | 
colloquial reading for 落 in certain compounds | 
|            落 | 
luò | 
to fall or drop / (of the sun) to set / (of a tide) to go out / to lower / to decline or sink / to lag or fall behind / to fall onto / to rest with / to get or receive / to write down / whereabouts / settlement | 
|            落后 | 
luò hòu | 
to fall behind / to lag (in technology etc) / backward / to retrogress | 
|             后 | 
Hòu | 
surname Hou | 
|             后 | 
hòu | 
empress / queen / (archaic) monarch / ruler | 
|             后 | 
hòu | 
back / behind / rear / afterwards / after / later / post- |