1. At present, currently, lately, recently, nowadays, these years, in the past several decades, over the last several years

　　目前、當前、近來、現今、這些年來、過去幾年來

　　2. At the turn of the century

　　(在)世紀初、世紀末、世紀之交

　　3. Thanks to China’s reform and opening-up policy...... has witnessed great economic and   social progress in the past two decades.

　　多虧中國的改革開放政策……在過去20年里目睹了巨大的社會經濟進步。

　　4. With the (rapid, marked, amazing, eye-catching, remarkable, fantastic) development/ progress/ growth/ advance/ improvement of economy/ society/ industry/ living standard, great changes have taken place in...

　　隨著經濟、社會、工業、生活水平(快速、顯著、驚人、令人矚目的)發展、進步、增長、提高……發生了巨大的變化

　　5. At the mercy of the ever-acelerated updating of science and technology, there are rapid changes in all aspects of our everyday lives.

　　受益于迅猛發展的現代科學技術，我們日常生活的方方面面都發生了巨大變化

　　6. With the arrival/ advent of the invention of .../ the information age/ the 21st century/ the economy age

　　隨著……的發明、信息時代、經濟時代的到來

　　7. We are now entering a brandnewera. The 21st century is a time of advanced scientific and technological knowledge.

　　我們正在靜如一個嶄新的時代，21世紀是最先進科技知識的時代

　　8. The human race has entered a completely new stage in its history. We have just crossed the threshold of the 21st century and the curtain of the new millennium is slowly rising.

　　人類已進入了歷史上的一個全新階段。我們剛剛跨入21世紀的門檻，新千年的帷幕正在徐徐升起

　　9. We are blessed with new opportunities and faced with new challenges.

　　我們被賦予新的機會，并且面臨著新的挑戰

　　10. With the increasingly more rapid economic globalization and urbanization, more problems are brought to our attention.