This was in contrast, we found in a visit to the less pricey part of the train, to the studious quiet among the mainly young people riding in the Red Service coach.
这和以年轻人为主的“红色”等级车厢形成一个对照，我们到那里探访了一次，发现敞开的车厢本来隐私较少，但是大家反而沉默寡言。
As with knife-throwing, unicycle-riding, and whip-handling, one gets better mainly by practice.
正如投掷飞刀、骑独轮车、并且挥舞鞭子一样，在大多数情况下，人靠实践可以变得更好。
This ability mainly includes aerobic metabolism capacity, anaerobic metabolism capacity and special strength as well as the relation between riding skill and aerobic and anaerobic capacities.
自行车运动员的专项体能主要包括有氧代谢能力、无氧代谢能力和专项力量，以及骑行技术与有氧、无氧能力的关系等。
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