diff --git a/locales/zh_Hans/main.ftl b/locales/zh_Hans/main.ftl
index d0d1b58..fec9695 100644
--- a/locales/zh_Hans/main.ftl
+++ b/locales/zh_Hans/main.ftl
@@ -70,3 +70,4 @@ tr-menu-debug-step-rate = 步进速率
 tr-menu-debug-step-rate-unit = 步/秒
 tr-menu-route-options-multilayer-timeout = 多层超时
 tr-menu-route-options-planar-timeout = 平面超时
+tr-menu-debug-show-bend-endpoint-tangents = 显示拐点切线