He looked tall and powerful and, with his dark, watchful face, a little threatening.
他看上去又高又壮,面色黝黑,满脸警觉,真叫人有点害怕。
《柯林斯高阶英汉双解学习词典》
Artificial evolution may be the only way to keep software on its toes, looking lively.
人为进化也许是唯一能使软件保持警觉 、 看上去有生气的方式.
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For the attention of the it, profession with painful scold, the friend's vigilance.
为之, 行业的注意和痛骂, 朋友的警觉.
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