in decline的音標是[?n d??ke?n]，基本翻譯是“下降，減少”，速記技巧是：in-否定+ decline-下降。

英文詞源：

in decline源自拉丁語“declinare”，意為“傾斜，下降”。

變化形式：

1. declined - 下降，衰退

2. decline rate - 下降率

3. decline in quality - 質量下降

4. economic decline - 經濟衰退

5. stock market decline - 股市下跌

6. population decline - 人口減少

7. decline in morale - 士氣下降

8. decline in production - 產量下降

9. decline in health - 健康狀況惡化

10. decline in popularity - 受歡迎程度下降

相關單詞10個：

1. recession（衰退，不景氣）：指經濟衰退或不景氣的情況。

2. depression（沮喪，低落）：指情緒低落或心情沮喪的狀態。

3. fall（落下，減少）：指物體從高處落下或數量減少。

4. drop（落下，減少）：指物體從高處落下或數量減少，也可以指價格下跌。

5. plummet（急劇下降，暴跌）：指急劇下降或暴跌的情況。

6. dwindle（減少，縮?。褐笖盗俊⒁幠５戎饾u減少或縮小。

7. shrink（收縮，減少）：指物體體積或數量縮小或減少。

8. slump（急劇下降，暴跌）：指急劇下降或暴跌的情況，也可以指經濟或市場的不景氣。

9. slide（下滑，滑行）：指物體在斜面上下滑.下滑或逐漸下滑。

10. taper（逐漸減少，變細）：指逐漸減少或變細的情況。

常用短語：

1. in decline 逐漸下降

2. decline sharply 急劇下降

3. decline steadily 穩定下降

4. decline year by year 逐年下降

5. decline in quality and quantity 數量和質量下降

6. decline in production 產量下降

7. decline in morale 士氣下降

例句：

1. Over the past decade, the number of visitors to our city has been in decline.

2. The company"s profits have declined sharply this year due to fierce competition.

3. The economy is steadily in decline, causing many people to worry about their job security.

4. The quality of education has declined year by year, making it harder for students to succeed in the competitive job market.

5. The production of our factory has declined significantly due to the impact of the pandemic.

6. The morale of the staff has been hit hard by the recent layoffs, with many feeling hopeless about the future.

英文小作文：

The Decline of the Environment

In recent years, we have seen a noticeable decline in the environment, from the decrease in wildlife populations to the rise in pollution levels. This decline is affecting our health, economy, and quality of life in many ways. We need to take action to reverse this trend and protect our planet for future generations.

One way to address this issue is to adopt sustainable practices that reduce our carbon footprint and minimize our impact on the environment. We can start by reducing our consumption of resources, recycling more often, and supporting companies and organizations that are committed to environmental sustainability. Additionally, we can encourage governments and businesses to take action by lobbying for policies that promote renewable energy sources and reduce emissions of harmful gases.

Ultimately, we must remember that we are all responsible for the state of the environment. By taking action together, we can reverse the decline and ensure a healthier, more sustainable future for ourselves and future generations.