n. a lightweight handheld collapsible canopy
n. a formation of military planes maintained over ground operations or targets
n. having the function of uniting a group of similar things
s. covering or applying simultaneously to a number of similar items or elements or groups
n. 伞, 雨伞, 保护伞
a. 伞的, 包罗万象的
vt. 用伞遮掩
1. I always carry an umbrella in my bag in case it rains.
我总是把伞放在包里，以防下雨。
2. She opened her umbrella to protect herself from the sun.
她打开伞来保护自己不被阳光晒伤。
3. The umbrella is red and has white polka dots on it.
这把伞是红色的，上面有白色的圆点。