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因为当输入焦点从下拉式方块移至按钮时,选取范围就会自动清除。
This is because the selection is automatically cleared when the input focus moves from the combo box to the button.
youdao
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因为当输入焦点从下拉式方块移至按钮时,选取范围就会自动清除。
This is because the selection is automatically cleared when the input focus moves from the combo box to the button.
youdao