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toku-sa-n · toku-sa-n · commit 8fca1ec844af · 2020-06-04T23:24:32.000+09:00
diff --git a/src/subtyping.md b/src/subtyping.md
@@ -1,4 +1,8 @@
+<!--
 # Subtyping and Variance
+-->
+
+# 派生型と変性
 
 Although Rust doesn't have any notion of structural inheritance, it *does*
 include subtyping. In Rust, subtyping derives entirely from lifetimes. Since
