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- Holdridge’s toad, found only in Costa Rica, was declared extinct. 只有在哥斯达黎加才能发现的霍尔德里奇蟾蜍,已被宣布灭绝。
- They spend the winter(s) in a warmer climate. 他们在气候较暖的地方过冬。
- A hummingbird picks up more than nectar at a flower in Costa Rica's Monteverde Cloud Forest Preserve. 一只蜂鸟吸进比较多的花蜜，花卉在哥斯达黎加的蒙特沃尔德云雾森林保存。
- Most plural nouns in English end in "s". 英语的复数名词多以“s”结尾。
- The sweater had shrunk after repeated washing(s). 这件套头毛衣洗过多次已缩水了。
- Some old folk(s) have peculiar tastes. 有些老人有特殊的爱好。
- Answer the following question(s). 回答下列问题。
- Most plural nouns in English end in s'. 英语的复数名词多以s结尾。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- Here are the designs. Which one(s) do you prefer? 这就是那些图样.;你喜欢哪一个[些]?
- Which journal(s) do you subscribe to? 你订阅哪一种杂志?
- They include Chile, Costa Rica and Panama. 其中包括智利、哥斯达黎加和巴拿马。
- The novel had an enormous vogue in the 1930's. 这本小说在三十年代曾广为流传。
- He earned four A's in the final examinations. 他期末考试四门功课得优。
- The Beatles were the pop idols of the 60's. 披头士乐队是六十年代人们崇拜的偶像。
- He returned to the fold at his 80's. 他在八十高龄又恢复原来的宗教信仰。
- Por la costa septentrional hay muchos acantilados. 在北部岸边有许多悬崖峭壁。
- In Costa Rica, it often rains during the winter. 在哥斯达黎加，冬天期间经常下雨。
- She has an amused twinkle in her eye(s). 她高兴得双目熠熠发亮。
- Did you receive the mail by Costa Rica? 你收到哥斯达黎加来的邮件了吗?
