一封不曾投递的信一yī — 1. one 2. single 3. a (article) 4. as soon as 5. entire; whole; all; throughout 6. "one" radical in Chinese characters (Kangxi radical 1) 7. also pr. (yāo) for greater clarity when spelling out numbers digit by digit (HSK 1)封fēng — 1. to confer 2. to grant 3. to bestow a title 4. to seal 5. classifier for sealed objects, esp. letters (HSK 2)不曾bù céng — hasn't yet; hasn't ever (HSK 5)投tóu — 1. to throw (sth in a specific direction: ball, javelin, grenade etc) 2. to cast (a ballot) 3. to cast (a glance, a shadow etc) 4. to put in (money for investment, a coin to operate a slot machine) 5. to send (a letter, a manuscript etc) 6. to throw oneself into (a river, a well etc to commit suicide) 7. to go to; to seek refuge; to place oneself into the hands of 8. (coll.) to rinse (clothes) in water (HSK 4)递dì — 1. to hand over; to pass on; to deliver 2. (bound form) progressively; in the proper order (HSK 5)的de — 1. of; ~'s (possessive particle) 2. (used after an attribute when it modifies a noun) 3. (used at the end of a declarative sentence for emphasis) 4. (used after a noun, verb or adjective to form a nominal expression, as in 皮革的 (pí gé de) "one made of leather" or 跑堂兒的 (pǎo táng r de) "a waiter (literally, one who runs back and forth in a restaurant)" or 新的 (xīn de) "new one") 5. also pr. (dì) or (di) in poetry and songs (HSK 1)信xìn — 1. letter 2. mail 3. classifier: 封 (fēng) 4. to trust 5. to believe 6. to profess faith in 7. truthful 8. confidence 9. trust 10. at will 11. at random (HSK 2)

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