用google.com检索

未找到符合"steel of a look "的结果。

倒是有...look of steel

如：

2017年3月1日 - Tom threw on his fire protection shirt and gave me his look of steel which is so convincing that I'm sure it would carry him to a tenth victory this ...

Imagine my surprise when I met this man, who, although elderly, stood bolt upright, with his look of steel, which many people have commented on, and with the ...

2016年6月23日 - He seems to be working his magic on England and combines his look of steel with a sharp and tactical coaching mind. From the outside ...

如果网友能找出这个X是不可数名词的例子及所在语境，拿出来供同好玩味一番，岂不更好？