如何在plot中将散点添加到现有的3D散点图

import matplotlib.pyplot as plt
from mpl_toolkits.mplot3d import Axes3D

fig = plt.figure()
ax = fig.add_subplot(111, projection='3d')

# 假设原有的散点数据为x1, y1, z1
ax.scatter(x1, y1, z1, c='r', marker='o', label='Original Points')

# 假设新的散点数据为x2, y2, z2
ax.scatter(x2, y2, z2, c='b', marker='^', label='New Points')

ax.legend()
ax.set_xlabel('X')
ax.set_ylabel('Y')
ax.set_zlabel('Z')

plt.show()