beef² v beef sth ↔ up phr v [T] informal to improve something, especially by making it stronger 【非正式】 加强; 改进: Security around the palace has been beefed up since the attack. 自从那次袭击事件以后，宫殿周围的保安措施已被加强。
beef sth ↔ up informal to improve something, especially by making it stronger 【非正式】 加强; 改进: Security around the palace has been beefed up since the attack. 自从那次袭击事件以后，宫殿周围的保安措施已被加强。