這兩人中，約翰更高；所有人中，約翰最高。

John is the taller of the two, and the tallest of them all.

Source: Tatoeba

Sentence Composition

=1 這 zhè
  1. (pronoun) this; these
  2. (bound form) this; the (followed by a noun)
  3. (bound form) this; these (followed by a classifier) (in this sense, commonly pr. zhèi, esp. in Beijing)
=1 這 zhèi (coll.) this
=2 兩 liǎng
  1. two
  2. both
  3. some
  4. a few
  5. tael, unit of weight equal to 50 grams (modern) or 1⁄16 of a catty 斤 jīn (old)
=2 兩 liàng Original form of 輛／辆 (liàng).
3 人中 rénzhōng
  1. philtrum
  2. infranasal depression
  3. the "human center" acupuncture point
4 約翰 Yuēhàn
  1. John (name)
  2. Johan (name)
  3. Johann (name)
=5 更 gēng
  1. to change or replace
  2. to experience
  3. one of the five two-hour periods into which the night was formerly divided
  4. watch (e.g. of a sentry or guard)
=5 更 gèng
  1. more
  2. even more
  3. further
  4. still
  5. still more
=6 高 Gāo surname Gao
=6 高 gāo
  1. high
  2. tall
  3. above average
  4. loud
  5. your (honorific)
7 所有人 suǒyǒurén
  1. everyone
  2. owner
=8 中 Zhōng
  1. (bound form) China; Chinese
  2. surname Zhong
=8 中 zhōng
  1. within; among; in
  2. middle; center
  3. while (doing sth); during
  4. (dialect) OK; all right
=8 中 zhòng
  1. to hit (a target)
  2. to be struck by (a bullet, illness etc)
  3. to win (a prize or lottery)
9 約翰 Yuēhàn
  1. John (name)
  2. Johan (name)
  3. Johann (name)
10 最高 zuìgāo
  1. tallest
  2. highest
  3. supreme (court etc)