at his best

• 处于最好状态, 处于全盛时期

at his best的用法和样例：

例句

1. Jacob was at his best in the role of Shylock; he did not merely act; he lived the part.
   雅各布最擅长扮演夏洛克这个角色，他不仅是在演戏，而是把角色演活了。
2. One should never be arrogant even when he is at his best.
   一个人在最得意时也不应傲慢。