微弱的目光通常可以用英文来表示为 "dim gaze" 或者 "faint glance". 来源方面，"dim" 是指光线不强，弱而无力，而 "faint" 则带有暗淡、模糊的含义，所以这两个词都可以用来形容微弱的目光。
下面给出一些例句：
She gave him a dim gaze and then looked away. 她朝他瞥了一眼，然后转身看向别处。
The patient's eyes were barely open, and they had a faint glance. 病人的眼睛勉强睁开，眼神微弱。
希望这些例句能够帮助您理解 "dim gaze" 或 "faint glance" 的含义。