1. 警觉：watchfully 警惕地 | watchfulness 警觉 | watchmaker 制表商

2. 警觉性：watchfully 警醒着 | watchfulness 警觉性 | watchglasscrystal 表蒙子

3. 警觉 (名)：watchfully 注意地; 警觉地 (副) | watchfulness 警觉 (名) | watchmaker 表的制造人, 钟表匠 (名)

noun

1. vigilant attentiveness

e.g. he keeps a weather eye open for trouble

Synonym: vigilanceweather eye

2. the process of paying close and continuous attention

e.g. wakefulness, watchfulness, and bellicosity make a good hunter
vigilance is especially susceptible to fatigue

Synonym: wakefulnessvigilancealertness