halflife

halflife的音标为[ˌhɔːlflaɪf]，基本翻译为“半衰期”或“半生存率”。速记技巧可以考虑将“halflife”拆分为“half”和“life”两个部分，“half”可以理解为“一半”，与时间相关的词汇通常与“life”有关，因此可以联想到“生命”或“存活时间”。

此外，还可以将“halflife”与一些常见的医学词汇联系起来，例如“half-life”可以与“half-dose”一起记忆，这样也可以帮助记忆。

"Half life"这个词的英文词源可以追溯到拉丁语"semi-"（半）和"vita"（生命）。它的意思是生命的一半时间。这个词通常用于描述放射性物质的衰变速度，或者在生物学中描述生物体生命周期的一半时间。

变化形式：名词形式为"half-life"，形容词形式为"half-lifey"。

相关单词：

1. "Half-life equation"（半衰期方程）: 这个词用于描述放射性物质衰变速度的计算方法。

2. "Half-life period"（半衰期）：这是生物体生命周期的一半时间，通常用于描述生物体的寿命。

3. "Half-life rate"（半衰期速率）：这个术语用于描述某个过程或事件的半衰期速度。

4. "Half-life decay"（半衰期衰减）：这个术语用于描述放射性物质的衰减过程。

5. "Half-life decay rate"（半衰期衰减率）：这是描述放射性物质衰减速度的量度。

6. "Half-life decay curve"（半衰期衰减曲线）：这是描述放射性物质衰减过程的曲线。

7. "Half-life decay process"（半衰期衰减过程）：这个术语用于描述放射性物质从高放射性状态向低放射性状态的转变过程。

8. "Half-life time"（半衰期时间）：这是一个时间单位，表示生物体生命周期的一半时间。

9. "Half-life decay rate curve"（半衰期衰减速率曲线）：这个曲线描述了放射性物质在一段时间内的衰减速率。

10. "Half-life decay curve analysis"（半衰期衰减曲线分析）：这个分析方法用于分析放射性物质衰减曲线的形状和特征，以了解其性质和状态。

halflife

常用短语：

1. halflife of battery：电池的半寿命期

2. halflife of poison：毒物的半衰期

3. halflife of radiation：辐射的半衰期

4. halflife of decay：腐烂的半寿命

5. halflife of decaying matter：腐烂物质的半寿命

6. halflife of decaying organism：生物体的半衰期

7. halflife of decaying metal：金属的半衰期

例句：

1. The battery has a halflife of only two days.

2. The poison has a halflife of three days.

3. The radiation from the nuclear explosion has a halflife of two hours.

4. The decaying fruit is already starting to smell bad after only a few days.

5. The decaying flesh of the dead animal is giving off a foul smell.

6. The decaying organism in the riverbank has taken a long time to decay completely.

7. The metal in the rusty car has a halflife of only a few years.

英文小作文：

Half life is a very important concept in science, especially in biology and chemistry. It refers to the time it takes for something to decrease by half, which is a very useful concept for understanding how things work and how they decay over time.

For example, when we talk about the halflife of a battery, we are referring to how long it takes for half of the battery to die, which is an important factor in determining how long it will last before it needs to be replaced. Similarly, the halflife of radiation refers to how long it takes for radiation to decrease by half after being released into the environment, which is used to measure the radioactivity of substances and determine how long they will remain dangerous after being exposed to the environment.

In addition, the halflife of decay is also very important in understanding how things decompose and how long it takes for them to turn into something else. Understanding these concepts can help us better understand our environment and how things work, which can be very useful in many different fields, including science, engineering, and environmental protection.