be very useful at
导读：be very useful at读音音标
英 [bi: ˈveri ˈju:sful æt]美 [bi ˈvɛri ˈjusfəl æt]
be very useful at意思解释
释义精通；
双语例句An army commander must be skille
英 [bi: ˈveri ˈju:sful æt]美 [bi ˈvɛri ˈjusfəl æt]
be very useful at意思解释
释义精通；
双语例句An army commander must be skille
be very useful at读音音标
英 [bi: ˈveri ˈju:sful æt]
美 [bi ˈvɛri ˈjusfəl æt]
be very useful at意思解释
释义
精通；
双语例句
An army commander must be skilled in tactics.一名军事指挥官必须精通战术。She was very proficient in music.她非常精通音乐。
