猛一看

měngyīkàn
  1. at first glance
  2. first impression

CEDICT

Entry Composition

1 猛 měng
  1. ferocious
  2. fierce
  3. violent
  4. brave
  5. suddenly
  6. abrupt
  7. (slang) awesome
2 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
3 看 kàn
  1. to see; to look at
  2. to read
  3. to watch
  4. to visit; to call on
  5. to consider; to regard as
  6. to look after
  7. to treat (a patient or illness)
  8. to depend on
  9. to feel (that)
  10. (after a verb) to give it a try
  11. to watch out for

Related entries

乍看 zhàkàn at first glance
或许是因为他有胡子而让他乍看之下很可怕，其实他是个非常好的人。

Possibly because he's got a beard, he looks scary at first glance but he's really a kind man.

Source: Tatoeba

第一眼 dìyīyǎn
  1. at first glance
  2. at first sight
她第一眼就吸引了我。

She attracted me at first sight.

Source: Tatoeba