问如何在matplotlib的文本串中加粗一个单词？

EN

import pandas as pd
import matplotlib.pyplot as plt

fig, (ax, ax_table, ax_text) = plt.subplots(nrows=3, figsize=(10,8), gridspec_kw=dict(height_ratios=[4,1,1]))
tbl = (ax_table.table(rowLabels=["RowLabel1","RowLabel2", 'RowLabel3'], 
        colLabels=['ColLabel1', 'ColLabel2', 'ColLabel3'], 
        cellText=[["1", "2", "3"],
                  ["1", "2", "3"],
                  ["1", "2", "3"]], 
        cellLoc='center',
        loc='center'))

tbl.auto_set_font_size(True)
tbl.set_fontsize(10)
tbl.scale(1,1)
ax_table.axis('off')

text = "This is text. I want the word 'blah' to be Bold."
ax_text.axis('off')
ax_text.annotate(text, wrap=True, xy=(-0.12,1), xycoords='axes fraction', weight='bold', verticalalignment='top')

fig