1·When angry or frightened, it is a formidable enemy.
当发怒或受惊吓时，黑熊会变成可怕的对手。
2·The self is in a sense the formidable enemy of a person.
在某种意义上，自我才是自我的最大敌人。
3·Perhaps the builders had heard of a new, formidable enemy that they had not.
也许创建者听说了他们不知道的新的、强大的敌人。
4·Perhaps the builders had heard of a new, formidable enemy that they had not.
可能建造者听说了一个他们没有听说过的新的、强大的敌人。
5·With this milestone in the coming time, the teams are preparing for "a formidable enemy. ""
随着这一里程碑时刻的即将到来，各支车队在准备方面都是“如临大敌”。