1.review n.回顾; 检查; 检讨; 重新考虑
例句:These arrangements are subject to periodic reviews.
这几项安排须定期检查。
评论性刊物, 评论
例句:The college published a drama review.
学院出版了一份戏剧评论刊物。
2.emerge vi.出现; 显出; 暴露
例句:The submarine at last emerged.
那艘潜艇终于浮出了水面。
It emerged that her past behaviour was far from irreproachable.
事实表明, 她过去的行为绝非无可非议。
3.evolve vt.vi.演变; 进化
例句:Language is constantly and gradually evolving.
语言在不断地缓慢发展。
He has evolved a new theory.
他已形成了一种新学说。
4.conceal v.隐瞒,隐匿,隐蔽,隐藏
例句:It's against law to conceal evidence.
隐藏证据是违法的。
5.espionage n.谍报活动; 间谍行为
例句:They were convicted of espionage.
他们被判有间谍罪。
6.retract vt.vi.撤回或撤消
例句:You may retract that statement.
你可以撤回那个声明。
7.volatile adj.易变的, 无长性的,无定性的,反复无常的, 易激动的
例句:With the markets being so volatile, investments are at great risk.
由于市场那么变化不定, 投资冒着很大的风险。