volunteer
[͵vɑlən`tɪr]
n. 志工、自願者 v. 擔任志工;自願做
例句

As an animal lover, Jonathan works as a volunteer at the local shelter every other weekend.

身為愛動物的人,強納森每隔一週的週末都會在當地的收容所擔任志工。

contribute
[kən`trɪbjut]
v. 貢獻;奉獻;捐獻
例句

Each member of the organization has contributed to building the new school.

這個組織的每一位成員都為新學校的建造做出了貢獻。

用法
contribute to/toward(s) + N./V-ing 為……做出貢獻
essential
[ɪ`sɛnʃəl]
adj. 至關重要的、不可或缺的、基本的
例句

Getting enough sleep is essential for maintaining good health and high energy levels.

獲得充足的睡眠對於維持健康與充沛精力至關重要。

moreover
[mɔr`ovɚ]
adv. 而且、此外
例句

Online learning saves time and money; moreover, it allows students to study at their own pace.

線上學習節省時間和金錢;此外,還能讓學生依自己的步調學習。

furthermore [`fɝðɚ͵mɔr]、additionally、what's more
profound
[prə`faᴜnd]
adj. 深刻的、深遠的;強烈的;深奧的
例句

The professor's words had a profound impact on Fiona's life and career.

教授的話對費歐娜的生活和事業都產生了深遠的影響。

fulfillment
[fᴜ`fɪlmənt]
n. 滿足(感)、成就(感);完成、實現
例句

Completing a big project gives me a sense of fulfillment that money alone can't buy.

完成一項大型專案帶給我一種金錢無法買到的成就感。

用法
a sense of fulfillment 滿足感、成就感