one / single / a (article) / as soon as / entire; whole; all; throughout / "one" radical in Chinese characters (Kangxi radical 1) / also pr. [yao1] for greater clarity when spelling out numbers digit by digit
(after a noun) between; among; amid / (used after certain bisyllabic words to form expressions indicating a short period of time, e.g. 彈指之間|弹指之间[tan2 zhi3 zhi1 jian1])