他完全不會游泳，但卻是一個滑雪高手。

He can't swim at all, but when it comes to skiing, he is the best.

Source: Tatoeba

Sentence Composition

1 他 tā
  1. (third-person singular) (since the early 20th century, usu. male) he; him; his
  2. (bound form) other; another; some other (as in 他日 tārì and 他人 tārén)
2 完全 wánquán
  1. complete; whole
  2. totally; entirely
3 不會 bùhuì
  1. improbable
  2. unlikely
  3. will not (act, happen etc)
  4. not able
  5. not having learned to do sth
  6. (coll.) (Tw) don't mention it
  7. not at all
=4 游泳 yóuyǒng
  1. swimming
  2. to swim
=4 游泳 yóuyǒng misspelling of 游泳 (yóuyǒng)
5 但 dàn
  1. but; yet; however; still
  2. merely; only; just
6 卻是 quèshì
  1. nevertheless
  2. actually
  3. the fact is ...
=7 一個 yīge
  1. a; an; one
  2. the whole (afternoon, summer vacation etc)
=7 一個 yīgè
  1. Combination of the numeral 一 (“one”) and the generic classifier 個／个: a; an; one
  2. same
8 滑雪 huáxuě
  1. to ski
  2. skiing
9 高手 gāoshǒu
  1. expert
  2. past master
  3. dab hand