diff --git a/test-typst/section/introduction.typ b/test-typst/section/introduction.typ
index f9306d8..d6144c7 100644
--- a/test-typst/section/introduction.typ
+++ b/test-typst/section/introduction.typ
@@ -15,9 +15,9 @@ However, the performance of 4H-SiC devices remains constrained by the presence o
     @miyanagi_annealing_2006 @iijima_correlation_2017.
 Furthermore,
   conventional methods for characterizing the doping properties of SiC
-    （such as secondary ion mass spectrometry (SIMS) and Hall effect measurements),
+    (such as secondary ion mass spectrometry (SIMS) and Hall effect measurements),
   are destructive and time-consuming.
-Therefore, there is a pressing need to develop non-destructive and efficient characterization techniques.
+Therefore, there is a pressing need to develop an ad-hoc and non-destructive characterization techniques.
 
 // 声子（量子化的原子振动）在理解晶体的原子结构以及热电性质方面起着重要作用。
 // 声子可以通过多种实验技术来探测，包括 EELS、IR 吸收谱等。