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diff --git a/README-zh_CN.md b/README-zh_CN.md
@@ -4,8 +4,7 @@
 
 # GoFA (基础天文标准库，Golang standards Of Fundamental Astronomy)
 
-GoFA 是一个纯Go实现的基础天文计算库，基于国际天文联合会官方的`基础天文标准库`【`Standards Of Fundamental Astronomy (SOFA)`, [http://iausofa.org](http://iausofa.org)】
-实现。
+GoFA 是一个纯Go实现的基础天文计算库，基于国际天文联合会官方的`基础天文标准库`【`Standards Of Fundamental Astronomy (SOFA)`, [http://iausofa.org](http://iausofa.org)】实现。
 
 GoFA 开发文档： <https://pkg.go.dev/github.com/hebl/gofa>。
 

diff --git a/README.md b/README.md
@@ -4,9 +4,9 @@
 
 # GoFA (Golang standards Of Fundamental Astronomy)
 
-GoFA is a pure Golang derived from the International Astronomical
-Union's (*IAU*) "`Standards Of Fundamental Astronomy (SOFA)`"  library
-official C release [http://iausofa.org](http://iausofa.org).
+GoFA is a pure Golang implementation derived from the International Astronomical
+Union's (*IAU*) "`Standards Of Fundamental Astronomy (SOFA)` [http://iausofa.org](http://iausofa.org)"  library
+official C release. .
 
 Reference documents are in: <https://pkg.go.dev/github.com/hebl/gofa>
 
@@ -75,7 +75,7 @@ go install github.com/hebl/gofa@latest
 
 ### v1.19
 
-Version 1.19 offers 192 routines for astronomy library (including time scales, Earth rotation, sidereal time, precession, nutation, polar motion, astrometry and transforms between various reference systems.), 55 routines for vector/matrix library.
+Version 1.19 offers 192 routines for astronomy library (including time scales, earth rotation, sidereal time, precession, nutation, polar motion, ephemerides, astrometry and transforms between various reference systems.), 55 routines for vector/matrix library.
 
 ## License