beef up

US /bif ʌp/

UK /bi:f ʌp/

A2 初級
phr. v.片語動詞加強
After the attack, the country beefed up its security

影片字幕

侄女第一次離開東京 | 日本生活 EP 322 (Our Niece's First Time Leaving Tokyo | Life in Japan EP 322)

16:05侄女第一次離開東京 | 日本生活 EP 322 (Our Niece's First Time Leaving Tokyo | Life in Japan EP 322)