diff --git a/Source/Modules/ControllerModules/KeyHandler_Core.swift b/Source/Modules/ControllerModules/KeyHandler_Core.swift
index 9c790668..c42d0440 100644
--- a/Source/Modules/ControllerModules/KeyHandler_Core.swift
+++ b/Source/Modules/ControllerModules/KeyHandler_Core.swift
@@ -312,11 +312,11 @@ class KeyHandler: NSObject {
   }
 
   func deleteBuilderReadingInFrontOfCursor() {
-    _builder.deleteReadingBeforeCursor()
+    _builder.deleteReadingAtTheRearOfCursor()
   }
 
-  func deleteBuilderReadingAfterCursor() {
-    _builder.deleteReadingAfterCursor()
+  func deleteBuilderReadingToTheFrontOfCursor() {
+    _builder.deleteReadingToTheFrontOfCursor()
   }
 
   func getKeyLengthAtIndexZero() -> Int {
diff --git a/Source/Modules/ControllerModules/KeyHandler_States.swift b/Source/Modules/ControllerModules/KeyHandler_States.swift
index 454db395..2d7f8cfd 100644
--- a/Source/Modules/ControllerModules/KeyHandler_States.swift
+++ b/Source/Modules/ControllerModules/KeyHandler_States.swift
@@ -372,7 +372,7 @@ extension KeyHandler {
 
     if _composer.isEmpty {
       if getBuilderCursorIndex() != getBuilderLength() {
-        deleteBuilderReadingAfterCursor()
+        deleteBuilderReadingToTheFrontOfCursor()
         walk()
         let inputting = buildInputtingState()
         // 這裡不用「count > 0」，因為該整數變數只要「!isEmpty」那就必定滿足這個條件。
diff --git a/Source/Modules/LanguageParsers/Megrez/1_BlockReadingBuilder.swift b/Source/Modules/LanguageParsers/Megrez/1_BlockReadingBuilder.swift
index d07d3af9..78b659f0 100644
--- a/Source/Modules/LanguageParsers/Megrez/1_BlockReadingBuilder.swift
+++ b/Source/Modules/LanguageParsers/Megrez/1_BlockReadingBuilder.swift
@@ -60,7 +60,7 @@ extension Megrez {
 
     public func readings() -> [String] { mutReadings }
 
-    @discardableResult public func deleteReadingBeforeCursor() -> Bool {
+    @discardableResult public func deleteReadingAtTheRearOfCursor() -> Bool {
       if mutCursorIndex == 0 {
         return false
       }
@@ -72,7 +72,7 @@ extension Megrez {
       return true
     }
 
-    @discardableResult public func deleteReadingAfterCursor() -> Bool {
+    @discardableResult public func deleteReadingToTheFrontOfCursor() -> Bool {
       if mutCursorIndex == mutReadings.count {
         return false
       }