These carnivores live only on four small islands in the archipelago where, scientists note, the prey base is too small to support mammalian carnivore.

科学家指出，这些食肉动物只生活在群岛中的四个小岛上，那里的猎物基数太小，哺乳类食肉动物无法生存。

youdao

His fan base is mostly middle-aged ladies.

他的粉丝群主要是中年妇女。

《柯林斯英汉双解大词典》

For one, his talking head's knowledge base is not large.

首先，他的能说会道的脑袋的知识储备并不大。

youdao

Pressure from the president's liberal Democratic base is likely to have an impact on that decision, says former assistant secretary of state Teresita Schaffer.

VOA: standard.2010.07.30

If I drew this altogether and this is one particular nucleic acid, now shown in more detail, all of the carbons of the pentose are shown here, the phosphate is shown, and a base is shown.

如果我把这个放在一起,这个核酸分子,让你们看得到更多细节,戊糖的五个碳都在这儿,磷酸基在这儿,碱基在这儿

耶鲁公开课 - 生物医学工程探索课程节选

This particular base is , this is ribose.

这个特别的碱基是A,这个是核糖

耶鲁公开课 - 生物医学工程探索课程节选

The user base is growing at 20% with the monthly unique log-ins growing at 47%.

FORBES: Renren Rides China's Social Networking And Gaming To $3.20

But using Ryan to ignite the Republican base is probably Romney's most plausible path to prevailing.

CNN: How Ryan can take Romney to the White House

This may not bode well for a Republican Party whose base is predominantly white and older.

FORBES: Election Unlikely to Change Policy or Politics