diff --git a/code/adjoint/inverse_driver.f b/code/adjoint/inverse_driver.f
index 8a392e8..cb915e7 100644
--- a/code/adjoint/inverse_driver.f
+++ b/code/adjoint/inverse_driver.f
@@ -912,13 +912,13 @@
 
       ! Mare array of scaling factors into a vector for optimization
       CALL GET_X_FROM_SF
-
+      ! 是根据位置将其映射到状态向量上
       !=================================================================
       ! OPTIMIZATION loop starts here!
       !=================================================================
 
       IF ( ITERATE ) THEN
-         ! Echo some input to the screen
+         ! Echo some input to the screen 迭代标记默认为 True，在开始数为 0 时被设为 False
          WRITE( 6, '(a)'   ) REPEAT( '=', 79 )
          WRITE( 6, '(a,/)'   ) 'S T A R T   O P T I M I Z A T I O N'
          WRITE (6,16)
@@ -970,7 +970,7 @@
                LATF = .FALSE.
             ENDIF
 
-            ! The minimization routine has returned to request the
+            ! The minimization routine has returned to request the 如果为 FG，则表示最小化进程返回需求在当前 x 位置继续计算 f 和 g
             ! function f and gradient g values at the current x 相当于这里就直接让梯度为 0 了
 
             ! Update iteration count 继续增加迭代次数
diff --git a/code/adjoint/inverse_mod.f b/code/adjoint/inverse_mod.f
index d4b4120..97003c2 100644
--- a/code/adjoint/inverse_mod.f
+++ b/code/adjoint/inverse_mod.f
@@ -545,7 +545,7 @@
 !*****************************************************************************
 !  Subroutine GET_X_FROM_ICS compiles the vector X of initial conditions from
 !   the array STT_IC.  (dkh, 9/16/04)
-!
+!  从缩放文件中获取状态向量的初始值
 !  NOTES:
 !  (1 ) Added ACTIVE_VARS == 'EMISSIONS' case.  (dkh, 11/27/04)
 !  (2 ) Added ACTIVE_VARS == 'FDTEST' case. (dkh, 02/17/05)
@@ -576,7 +576,7 @@
       INTEGER                    :: OFFSET
 
       !=================================================================
-      ! GET_X_FROM_SF begins here!
+      ! GET_X_FROM_SF begins here! 开始迭代
       !=================================================================
       IF ( LICS ) THEN
 
@@ -590,10 +590,10 @@
 
             I_DUM    = I + (  IIPAR * ( J - 1)  )
      &                   + (  IIPAR * JJPAR * ( L - 1 )  )
-     &                   + (  IIPAR * JJPAR * LLPAR * ( N - 1 )  )
+     &                   + (  IIPAR * JJPAR * LLPAR * ( N - 1 )  ) ! 判断变量对应的状态向量位置
 
             ! Load X from active tracer concentrations
-            X(I_DUM) = ICS_SF(I,J,L,N)
+            X(I_DUM) = ICS_SF(I,J,L,N) ! 获取相关状态向量的缩放系数
 
          ENDDO
          ENDDO
diff --git a/code/new/routines.f b/code/new/routines.f
index 2fb903a..33a855b 100644
--- a/code/new/routines.f
+++ b/code/new/routines.f
@@ -3452,7 +3452,7 @@ c       stpmax is a double precision variable.
 c         On entry stpmax is a nonnegative upper bound for the step.
 c         On exit stpmax is unchanged.
 c
-c       task is a character variable of length at least 60.
+c       task is a character variable of length at least 60. 关于 task 变量的具体说明
 c         On initial entry task must be set to 'START'.
 c         On exit task indicates the required action:
 c