frontier
[͵frʌn`tɪr]
n. 國境、邊疆;(探索活動等的)新領域
例句

The small town was located on the frontier, far from any cities.

這座小鎮位於邊境,與其他城市相距甚遠。

mysterious
[mɪ`stɪriəs]
adj. 神祕的、難以理解的
例句

Mr. Blackwell recently received a mysterious letter with no return address.

布萊克威爾先生最近收到了一封沒有寄件地址的神祕信件。

harsh
[hɑrʃ]
adj. 惡劣的、嚴峻的;殘酷的
例句

After losing her job, Bridget had to face the harsh reality of her situation.

失業後,布莉姬特不得不面對自身處境的殘酷現實。

characterize
[`kɛrɪktə͵raɪz]
v. 具有⋯⋯特徵;描述⋯⋯的特性
例句

Dr. Burke's studies are characterized by long, complex sentences with lots of advanced words.

伯克博士的研究特點是句子複雜冗長且有大量高深的詞彙。

indigenous
[ɪn`dɪdʒənəs]
adj. 土生土長的(作此義時字首I常大寫);本土的、當地的
例句

The Indigenous people of Australia have lived there for thousands of years.

澳洲的原住民已經在那裡生活了數千年。

resident
[`rɛzədənt]
n. 居民、住戶
例句

Gavin has been a resident of this city since he was a child.

蓋文從小就是這個城市的居民。

ecosystem
[`iko͵sɪstəm]
n. 生態系統
例句

Pollution can seriously damage the balance of an ecosystem.

汙染會嚴重破壞生態系統的平衡。

remarkable
[rɪ`mɑrkəbəl]
adj. 非凡的、驚人的、引人注目的
例句

Meredith's remarkable talent for music was obvious from a young age.

梅雷狄絲非凡的音樂才華從小就顯而易見。

treaty
[`triti]
n. 條約、協定
例句

The two countries signed a peace treaty to end the war.

兩國簽署了和平條約來結束戰爭。

vast
[væst]
adj. 廣闊的、巨大的;大量的
例句

As we sailed across it, the ocean seemed vast and endless.

當我們航行穿過它時,海洋看起來廣闊無邊。

exploration
[͵ɛksplə`reʃən]
n. 探索、探測;探究
例句

Space exploration has led to many important scientific discoveries.

太空探索帶來了許多重要的科學發現。

continuously
[kən`tɪnjuəsli]
adv. 持續不斷地;接連地
例句

Myron has been working continuously on the project for several hours.

邁倫已經連續好幾個小時在做這個專案了。

discipline
[`dɪsəplən]
n. (大學的)學科(可數);紀律、訓練(不可數)
例句

Mathematics is one of the disciplines that Alma is thinking of studying in college.

數學是艾瑪考慮在大學研讀的學科之一。

horizon
[hə`raɪzn̩]
n. 地平線(作此義時用單數,且前面須加 the);範圍、視野
例句

When he stood on the beach, Antonio could see a ship approaching on the distant horizon.

當他站在海灘上,安東尼奧能夠看見一艘船正從遠處的地平線慢慢接近。