diff --git a/config-sync/.config/ibus/rime/custom_phrase.txt b/config-sync/.config/ibus/rime/custom_phrase.txt
index 25f26ee..776e00a 100644
--- a/config-sync/.config/ibus/rime/custom_phrase.txt
+++ b/config-sync/.config/ibus/rime/custom_phrase.txt
@@ -92,6 +92,8 @@ _{\mathcal{E}}	E	1
 \frac{dx}{dt}	dxdt	10
 \frac{dy}{dt}	dydt	10
 \frac{d^2y}{dx^2}	dydx	9
+\frac{\partial f}{\partial x}	dfdx	10
+\frac{\partial f}{\partial y}	dfdy	10
 
 _(:з」∠)_	tq	1
 _(:з」∠)_	tangqiang	1