此致: (used at the end of a letter to introduce a polite salutation)...
州: prefecture, (old) province, (old) administrative division, state (e.g. of US), oblast (Russia), canton (Switzerland)...
睡: to sleep, to lie down...
外婆: (coll.) mother's mother, maternal grandmother...
欢快: cheerful and lighthearted, lively...
附近: (in the) vicinity, nearby, neighboring, next to...
十分: very, completely, utterly, extremely, absolutely, hundred percent, to divide into ten equal parts...
免疫: immunity (to disease)...
