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- The orient has been playing an active role in the world economy. 亚洲一直在世界经济中发挥积极作用。
- He is an active member of the school's stamp club. 他是学校集邮俱乐部的一名活跃会员。
- An active volcano may explode at any time. 活火山随时都有可能爆发。
- Is it wise to engage in active sports at your age? 我这样的年纪积极参加体育活动是否明智?
- She was active as a left-winger in the party. 她是党内积极的左翼分子。
- He was very active and rode down several horses. 他劲头很大,一连骑了好几匹马。
- She plays an active part in local politics. 她积极参与地方政治活动。
- The steel market will continue to be active. 钢材市场将会继续保持活跃。
- An active volcano may erupt at any time. 活火山随时可能喷发。
- A closely related concept is that of free valence. 一个密切有关的概念是自由价。
- He was disabled when on active service. 他在战斗中受伤致残。
- Ms. Brown is active in the party. 布朗女士在晚会上很活跃。
- The active boy was extremely distractible. 那好动的男孩极不专心。
- The outer ring contains the valence electrons. 排在外层的有价电子。
- His lame foot disqualified him for active work. 跛脚使他无法参加积极活动。
- An atom or a radical with a valence of 1. 一价原子或一价基。
- He's very active for an elderly man. 作为老年人,他是非常活跃的。
- Having a valence of four;tetravalent. 四价的;四个原子价的
- She is very active for an octogenarian. 她已经是八旬老人了,还很精神。
- Elements 3 is a nonmetal with one valence electron. 元素3是带-1价的非金属元素。