diff --git a/_site/heti-addon.js b/_site/heti-addon.js
index dc7d84c..03d53bf 100644
--- a/_site/heti-addon.js
+++ b/_site/heti-addon.js
@@ -767,13 +767,15 @@
 	  }
 
 	  autoSpacing () {
-	    document.addEventListener('DOMContentLoaded', () => {
+	    const callback = () => {
 	      const $$rootList = document.querySelectorAll(this.rootSelector);
 
 	      for (let $$root of $$rootList) {
 	        this.spacingElement($$root);
 	      }
-	    });
+	    };
+	    if (document.readyState === 'complete') setTimeout(callback);
+	    else document.addEventListener('DOMContentLoaded', callback);
 	  }
 	}
 
diff --git a/_site/heti.css b/_site/heti.css
index f13afed..b237809 100644
--- a/_site/heti.css
+++ b/_site/heti.css
@@ -216,10 +216,6 @@
   clear: both;
 }
 
-.heti:not(:lang(zh)):not(:lang(ja)):not(:lang(kr)), .heti:not(:lang(zh)) {
-  letter-spacing: 0;
-}
-
 .heti > *:first-child,
 .heti section > *:first-child,
 .heti td > *:first-child {
@@ -332,6 +328,22 @@
   color: inherit;
 }
 
+.heti:not(:lang(zh)):not(:lang(ja)):not(:lang(kr)), .heti:not(:lang(zh)) {
+  letter-spacing: 0;
+}
+
+.heti a,
+.heti abbr,
+.heti code,
+.heti heti-spacing,
+.heti [lang="en-US"] {
+  /* 
+      There should be no leeter-spacing between
+      English characters.
+    */
+  letter-spacing: normal;
+}
+
 .heti h1,
 .heti h2,
 .heti h3,
diff --git a/lib/_base.scss b/lib/_base.scss
index ff8e979..e70ada0 100644
--- a/lib/_base.scss
+++ b/lib/_base.scss
@@ -6,13 +6,6 @@
   // 清容器浮动
   @include clear-float();
 
-  // 非中文时不加间距
-  letter-spacing: $letter-spacing-medium;
-  @include non-cjk-block {
-  letter-spacing: $letter-spacing-normal;
-  
-  }
-
   // 清容器内首尾元素外边距
   &,
   section,
@@ -113,4 +106,23 @@
       }
     }
   }
+
+  // 非中文时不加间距
+  letter-spacing: $letter-spacing-medium;
+  @include non-cjk-block {
+  letter-spacing: $letter-spacing-normal;
+  
+  }
+
+  a, 
+  abbr, 
+  code, 
+  heti-spacing, 
+  [lang="en-US"] {
+    /* 
+      There should be no leeter-spacing between
+      English characters.
+    */
+    letter-spacing: normal; 
+  }  
 }