- 1. 無防守的；無防備的
- 2. 不小心的；輕率的，大意的
In an unguarded moment, he gave away most important secrets. 他一不留神洩露了非常重要的祕密。
...the United States and Canada is the longest unguarded border in the world
...fake moves are particularly solid, frequently catch the defenders unguarded. It goes without saying that the tatoos on his body...
...; 戴上面具，盡情的享受摧慘別人的快感 Strike them unguarded, and cover them with fatal injuries. 讓人無法防備，讓人完全受到...