1) He was disloyal to his friends.
他对朋友不忠。
2) He is constant to his friends.
他对朋友忠实。
3) He abides by his friends.
他忠于朋友。
4) He is constant to his friends .
他忠于他的朋友。
5) One should cling to one's friends.
对朋友应该忠实。
6) Be loyal to your girlfriends.
对女朋友要忠诚.
补充资料：忠实
①忠诚老实，十分可靠：忠实厚道｜忠实的信徒｜忠实的朋友。②真实正确：这本小说是他一生忠实的写照。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条