diff --git a/paper/result/perfect/default.typ b/paper/result/perfect/default.typ
index 74f45f5..5155cd9 100644
--- a/paper/result/perfect/default.typ
+++ b/paper/result/perfect/default.typ
@@ -26,17 +26,17 @@ For grazing incidence,
 我们将这 21 个声子模式分为两类：18 个极性可以忽略的声子模式（即极性为零或非常弱的声子），在拉曼散射过程中它们的电极性造成的效应可以忽略；
   和 3 个强极性声子模式，在拉曼光谱中电极性效应是可观测的。
 
-At each such position near the #sym.Gamma point,
-  there exist 21 phonon modes (with degeneracies counted accordingly).
+At each position near the #sym.Gamma point,
+  there are 21 phonon modes (counting degeneracies).
 These modes were categorized into two groups according to their electrical polarities:
   18 negligible-polar phonons (i.e., zero or very weak electrical polarity),
-    in which same species atoms vibrate in opposite directions and the electrical cancellated with each other,
-    leading to negligible electrical polarity during Raman scattering process,
-    shown as gray lines in @figure-discont;
+    where atoms of the same species vibrate in opposite directions
+    resulting in effective cancellation of electrical polarization during the Raman process
+    (gray lines in @figure-discont);
   and three strong-polar phonons,
-    in which all atoms of the same species vibrate in the same direction,
-    resulting in a strong dipole moment and observable electrical polarity in Raman spectra,
-    shown as colored lines in @figure-discont.
+    where atoms of the same species vibrate in phase,
+    resulting in strong electrical polarization and observable effects in Raman spectra,
+    (colored lines in @figure-discont).
 
 #include "non-polar/default.typ"
 #include "polar/default.typ"
diff --git a/paper/todo.typ b/paper/todo.typ
index 1172eb5..107d7b1 100644
--- a/paper/todo.typ
+++ b/paper/todo.typ
@@ -37,10 +37,10 @@
         - [x] 英文
         - [x] 调整语言
         - [ ] 调整画图
-      - [ ] 每个位置有 21 个模式
+      - [x] 每个位置有 21 个模式
         - [x] 中文
         - [x] 英文
-        - [ ] 调整语言
+        - [x] 调整语言
     - [/] 无缺陷
       - [ ] 总述
         - [x] Gamma 附近有 21 个模式，我们将它们分为强极性和弱极性