翻译成英文(火车种类):特快,不快,直达,

候车室 wait room(in a railway or bus station)
硬卧 hard sleeper
软卧 soft berth
特快 express
直达 express, nonstop

特快,不快,直达,
“不快”应该是“普快”

特快 express
普快: common
直达: nonstop

特快: posthaste
不快: no fast
直达: through

特快: express
不快: no fast
直达: nonstop