Its molecular structure is made up of a five member, unsaturated lactone ring with two hydroxyl groups.

其分子结构是由五个成员国，不饱和内酯环两个羟基。

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I've been a card-carrying member of the party for five years.

我当正式党员已经五年了。

《柯林斯英汉双解大词典》

A five-member WHO team, including Mr Gibbs, visited health facilities at the Chinese earthquake's epicentre in Sichuan province.

由五人组成的世卫组织专家组（包括Gibbs先生）考察了中国四川省地震中心地带的卫生机构情况。

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Jackson first played at the Apollo at the age of 9 when he was a member of the Jackson Five.

VOA: standard.2009.06.27

Negotiations among the five permanent Security Council member states on a new sanctions resolution have been underway in New York for several weeks.

VOA: standard.2010.05.14

It has similarly failed to respond to an invitation by European Union Foreign Policy chief Javier Solana for a new round of talks on its nuclear program with the five permanent U.N.Security Council member countries and Germany,the P5+1.

VOA: standard.2009.06.24

It has now set up a five member working group to investigate the issue and encourage pupils to take school meals.

BBC: School meals 'task force' created

The agreement provides for a directly-elected 21-member assembly, with a five-member executive.

BBC: The overwhelming majority of Nunavik residents are Inuit

Better known as "hide" (pronounced hee-day, and with a small h), Matsumoto played lead guitar with the now-defunct rock group X Japan - a five-member band that had a passionate following among teenagers, but which most adults had never even heard of.

CNN: ISOLATED IN THEIR GRIEF