a shower curtain的用法和样例：
- My first morning in Washington, I realized I'd forgotten to buy a shower curtain and had to scrunch up against the shower wall in order to avoid flooding the bathroom floor.
- He go up to his room and have a shower.
- It was nothing more than a shower.
- I'd prefer a shower to a bathtub, if possible.
- I went out, merely to get caught in a shower.