原文：https://support.pokemongo.nianticlabs.com/hc/en-us/articles/221957648-Finding-and-Catching-wild-Pok%C3%A9mon
短网址：https://goo.gl/jzCpNP
这边节录部分原文说明：
To catch a Pokémon:
1. When a wild Pokémon is nearby, your device will vibrate, and the Pokémon
will appear on the map. Touch the Pokémon to begin your attempt to catch
it.
2. The Pokémon will appear in front of you.
Note: You may need to orient your device or switch out of camera mode.
3. Touch and hold your PokéBall.
4. A target ring will appear around the Pokémon. The ring's color indicates
the difficulty level of capturing the Pokémon. A green ring indicates
the capture is low difficulty, orange indicates intermediate difficulty,
and red indicates extreme difficulty.
5. You have the greatest chance of capturing the Pokémon while the
colored ring is at its smallest diameter. At the opportune moment, fling
the PokéBall toward the Pokémon.
6. If you are successful, the PokéBall will capture the Pokémon. Watch out,
though