细菌微小到无法用肉眼看到。

Bacteria are so small that they cannot be seen with the naked eye.

Source: Tatoeba

Sentence Composition

1 细菌 xìjūn
  1. bacterium
  2. germ
2 微小 wēixiǎo
  1. minute (i.e. extremely small)
  2. infinitesimal
3 到 dào
  1. to reach; to arrive
  2. to leave for; to go to
  3. to (a place); until (a time); up to (a point)
  4. (verb complement indicating arriving at a place or reaching a point)
  5. considerate; thoughtful; thorough
4 无法 wúfǎ unable to; incapable of
5 用 yòng
  1. to use; to make use of; to employ
  2. (coverb) with; using
  3. to need; to have to (usu. used in the negative or in questions)
  4. usefulness; utility
  5. (bound form) expense; outlay
  6. (courteous) to eat; to drink
  7. (literary) hence; therefore
6 肉眼 ròuyǎn
  1. naked eye
  2. layman's eyes
7 看到 kàndào to see