1. The bird became lethargic at noon.
    这只鸟在中午时就不活泼了。

2. The miserably hot weather made them all lethargic.
    糟糕的热天气使他们都昏昏欲睡。

3. Under the influence of the medicine, I have been quite lethargic lately.
    在药物的影响下，我近来很爱睡。

1. 昏睡的：lethal factor 致死因素 | lethargic 昏睡的 | lethargy 嗜睡症

2. danci.911cha.com

2. 迟钝的：lazy 懒惰 | lethargic 迟钝的 | listless 无精打采

3. lethargic什么意思

3. 嗜眠的：lethality rate 致死率 | lethargic 嗜眠的 | lethargy 嗜眠

4. 无生气的,昏睡的：lethal致死的,致命的 | lethargic无生气的,昏睡的 | lukewarm不热情的,半心半意的

1. 慵懒的；没精打采的；懒洋洋的
    If you are lethargic, you do not have much energy or enthusiasm.

    e.g. He felt too miserable and lethargic to get dressed.
           他心情低落，无精打采，完全没有心思穿衣整装。

1. deficient in alertness or activity

    e.g. bullfrogs became lethargic with the first cold nights

    Synonym: unenrgetic