diff --git a/pyinfinitensor/src/pyinfinitensor/onnx.py b/pyinfinitensor/src/pyinfinitensor/onnx.py
index bd0b926a..ce315685 100644
--- a/pyinfinitensor/src/pyinfinitensor/onnx.py
+++ b/pyinfinitensor/src/pyinfinitensor/onnx.py
@@ -351,7 +351,6 @@ def to_onnx(graph: backend.GraphHandler, name: str) -> ModelProto:
 
         def push_output(self, name: str, tensor: backend.Tensor) -> str:
             self.names[tensor] = name
-            # TODO 需要判断全图输出并保存到 outputs
             return name
 
         def push_input(self, tensor: backend.Tensor) -> str:
diff --git a/src/ffi/ffi_infinitensor.cc b/src/ffi/ffi_infinitensor.cc
index 09fa361c..e545f43c 100644
--- a/src/ffi/ffi_infinitensor.cc
+++ b/src/ffi/ffi_infinitensor.cc
@@ -29,7 +29,7 @@ void export_values(py::module &m) {
 #define VALUE(TYPE, NAME) value(#NAME, TYPE::NAME)
 
     py::enum_<ActType>(m, "ActType")
-        .value("Linear", ActType::None) // None 是 Python 关键字，不能用
+        .value("Linear", ActType::None) // `None` is Python keyword
         .VALUE(ActType, Relu)
         .VALUE(ActType, Sigmoid)
         .VALUE(ActType, Tanh)