diff --git a/trk.sh b/trk.sh
new file mode 100644
index 0000000..ccd2511
--- /dev/null
+++ b/trk.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+if [ $# -gt 0 ]; then
+    text=$*
+else
+    text=$(cat)
+fi
+
+if printf '%s' "$text" | grep -qP '[\x{AC00}-\x{D7A3}\x{3131}-\x{3163}]'; then
+    pair=ko:en
+else
+    pair=en:ko
+fi
+
+exec trans -b "$pair" "$text"