6、“值得(我们)欣慰 / 高兴 / 欣喜 / 庆贺的是…”
It is gratifying / delightful / pleasing / wonderful / great(for us)to know / see…
We / People are gratified / delighted / pleased / happy / glad to know / see…
7、“是…的原因”
be the instrument of
A generates / gives rise to / gives birth to / leads to / results in B
As a result / Consequently / Finally / ……
各国有着不同的发展历史、文化传统、政治制度和经济模式，这是亚太地区富有发展活力的重要原因。
Countries are different in history, cultural tradition, political system and economic model,
which gives the region its very vigor and vitality.
8、“问题” problem
安全问题→security concerns / security issues / security threats
台湾问题→Taiwan issue / problem / question
根本问题→basic question
原则问题→matter of principle
找出问题→locate the fault
扬声器有问题→There is a fault in the loudspeaker.
我今天谈四个问题→I’d like to make four points today.
