lethargy

• n. 昏睡；死气沉沉；嗜眠（症）

来自希腊语lethargia,遗忘，忘却，lethe,忘记，词源同latent,Lethe,argos,无精神，来自a-,无，没有，-erg,工作，趋动，词源同work,synergy.即如同游魂，无精打采，冷漠。

lethargy

lethargy: [14] Greek léthē meant ‘oblivion’ (the Romans used it for the name of a river in Hades whose water induced forgetfulness, and its influence has also been traced in changing Latin lētum ‘death’ to lēthum, source of English lethal [17]). From it was formed the adjective léthargos, which in turn produced the noun lēthargíā, source (via Latin and Old French) of English lethargy.
=> lethal

lethargy (n.)

late 14c., litarge, from Old French litargie or directly from Medieval Latin litargia, from Late Latin lethargia, from Greek lethargia "forgetfulness," from lethargos "forgetful," originally "inactive through forgetfulness," from lethe "forgetfulness" (see latent) + argos "idle" (see argon). The form with -th- is from 1590s in English.

1. Symptoms include tiredness, paleness, and lethargy.

症状包括疲倦、脸色苍白、没有精神。

来自柯林斯例句

2. After the meal, I could feel lethargy overtaking me.

饭后我昏昏欲睡.

来自《简明英汉词典》

3. Sleep deprivation can cause stress, loss of appetite and lethargy.

睡眠不足会导致紧张 、 没有胃口和懒散.

来自《简明英汉词典》

4. She was suddenly overcome by lethargy.

她突然委靡不振.

来自《简明英汉词典》

5. Get your body moving to boost energy, stay supple and shake off winter lethargy.

锻炼身体以增加活力，保持柔韧性，甩掉冬日的慵懒。

来自柯林斯例句