Question

spent adj.用尽的,精疲力尽的,失去效能的 When you're spent, you've used up your reserves of energy, and when a physical item is spent, it's outlived its usefulness. Spent fuel, for example, has been burned and can no longer power a machine, and a rocket might power a space shuttle until it's spent and falls away. The adjective spent comes from the verb spend, "to pay out," which has the Latin root expendere, "to pay down." 1 Spent is the past tense and past participle of spend . 2[ADJ 形容词]已用尽的；用过的 Spent substances or containers have been used and cannot be used again.   [usu ADJ n]Radioactive waste is simply spent fuel...放射性废物就是用后的燃料。Several spent cartridges have already been found.几个空弹壳已经被找到。...spent uranium.用过的铀

Accepted Answer

[spent] If you're spent, you are completely worn out or exhausted. Almost everyone feels completely spent after climbing a mountain or running a marathon. ☆☆☆☆☆

英语单词	spent
英美音标	[spent]
中文释义	adj.用尽的,精疲力尽的,失去效能的
vocabulary简明	If you're spent, you are completely worn out or exhausted. Almost everyone feels completely spent after climbing a mountain or running a marathon.
vocabulary扩展	When you're spent, you've used up your reserves of energy, and when a physical item is spent, it's outlived its usefulness. Spent fuel, for example, has been burned and can no longer power a machine, and a rocket might power a space shuttle until it's spent and falls away. The adjective spent comes from the verb spend, "to pay out," which has the Latin root expendere, "to pay down."
柯林斯星级	☆☆☆☆☆
柯林斯解释	1 Spent is the past tense and past participle of spend . 2 [ADJ 形容词]已用尽的；用过的 Spent substances or containers have been used and cannot be used again. [usu ADJ n] Radioactive waste is simply spent fuel... 放射性废物就是用后的燃料。 Several spent cartridges have already been found. 几个空弹壳已经被找到。 ...spent uranium. 用过的铀

Spent Completely Power Spend Pay Past Adj.用尽的,精疲力尽的,失去效能的 Worn