原级：changeover
1. The winning swimmers should have all parts of their race technique honed to perfection, including the changeovers in the Relay events.
2. But both players showed little difficulty in switching surfaces, as they changed shoes at changeovers.
3. The surface was so hot that Jankovic iced the soles of her shoes during changeovers.
4. Livni said peace talks with the Palestinians must continue regardless of the leadership changeovers in the US and Israel.