1. Cutman
A cutman is a person responsible for preventing and treating physical damage to a fighter during the breaks between rounds of a full contact match such as a boxing, kickboxing (跆拳道) or a mixed martial arts bout. Cutmen typically handle swelling (肿胀), nosebleeds (鼻出血) and lacerations (commonly called cuts 伤口). The rules of full contact sports stipulate that these injuries can be a cause for premature match stoppage (比赛中断), counting as a loss to the injured fighter. The cutman is therefore essential to the fighter, and can be a decisive factor in the outcome of the match.
The compensation for cutmen varies, generally staying within 1-3% of fighter's prize money. For many fighters on a low budget, the cutman duties are performed by their cornerman (在场外给予指导的人，通常由教练或者队友担当). While most athletic commissions require cutmen to be licensed, there is usually no formal training or certification required. Most cutmen learn their trade through apprenticeship and self-education.
Cutmen should not be confused with fight doctors, whose task is closer to that of neutral referees, providing medical advice and monitoring the safety of both fighters in accordance with regulations or law.
2. I’ll give you one more round.
我让你再打一轮。Round 这里指比赛中“一轮，轮”。
3. Seconds out
相当于 Time’s up “时间到”的意思。
4. Warm up
常用来表示运动前的“热身”，例如：It's important to warm up before you play any sport. 做任何运动前都得热身。
这里指给车子“预热”，当天气冷的时候，车子不容易发动，因此要预热一下，例如：I'll go out and warm up the car. 我先出去把车子预热一下。
5. Undercard
The undercard or preliminary matches refers to any bouts that occur before the headline or 'Main Event' of a particular boxing, wrestling, or other bout-style sporting match. Typically the undercard is intended to provide fans with an opportunity to see up-and-coming fighters or fighters who are lesser known and less popular than their counterparts in the main event. The undercard also ensures that if the main event ends quickly fans will still feel that they received sufficient value for the price of their admission. Typically, undercard matches only last for four rounds, to ensure that the crowd does not have to wait too long for the main event.