diff --git a/zh-CN/src/type-conversions/others.md b/zh-CN/src/type-conversions/others.md
index 9503340..35b55ef 100644
--- a/zh-CN/src/type-conversions/others.md
+++ b/zh-CN/src/type-conversions/others.md
@@ -61,6 +61,7 @@ impl FromStr for Point {
     fn from_str(s: &str) -> Result<Self, Self::Err> {
         let coords: Vec<&str> = s.trim_matches(|p| p == '(' || p == ')' )
                                  .split(',')
+                                 .map(|x| x.trim())
                                  .collect();
 
         let x_fromstr = coords[0].parse::<i32>()?;
@@ -165,4 +166,4 @@ fn main() {
 }
 ```
 
-> 你可以在[这里](https://github.com/sunface/rust-by-practice/blob/master/solutions/type-conversions/others.md)找到答案(在 solutions 路径下) 
\ No newline at end of file
+> 你可以在[这里](https://github.com/sunface/rust-by-practice/blob/master/solutions/type-conversions/others.md)找到答案(在 solutions 路径下)