train – hoar-chur
Written as huŏchē or huoche
To remember that train is pronounced hoar-chur (huoche) in Mandarin Chinese, use the following mnemonic:
The train's passengers were all horses dressed in their Sunday best for church (hoar-chur).

Tones
1. Hoar (horse) is a 3rd tone with ∪ as an accent.
Associate horse, a 3rd tone, with a horse shoe or horse or smile. See Tones and Mnemonics.

The horse smiled as he opened his new shoes.
2. Chur (church) is a 1st tone with — as an accent.
Associate church, a 1st tone, with a string or tie or tying or knot. See Tones and Mnemonics.

The church was tied up with string.
Remember
Hoar = 3rd tone = ∪
Chur = 1st tone = —