正好 → ☊ zheng4hao3 
just (in time); just right; just enough; to happen to; to chance to; by chance; it just so happens that ☊ 
Chỉ ☊ 正好 ☊ → 恰好 ☊ → ☊ → 
just 正好 ☊ → 正确地 ☊ → 严密的 ☊ → precisely 正好 ☊ → 恰恰 ☊ → ☊ → right