二)原因
1.A number of factors are accountable for this situation.
A number of factors might contribute to the phenomenon.
2. The answer to this problem involves many factors.
3. The phenomenon mainly stems from the fact that...
4. The factors that contribute to this situation include...
5. The change in ...largely results from the fact that...
6. We may blame ...,but the real causes are...
7. Part of the explanations for it is that ...
One of the most common factors is that ...
Another contributing factor is ...
Perhaps the primary factor is that
But the fundamental cause is that ...
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国内英语资讯:China, Indonesia agree to promote bilateral cooperation
体坛英语资讯:Ordas wins Argentinas first gold at Youth Olympics 2018
国内英语资讯:Spotlight: Xis Asia-Pacific trip to boost open cooperation, inclusive growth
国内英语资讯:Expectations run high on Xis visit to the Philippines
国内英语资讯:China urges US to stop wagging finger at others
体坛英语资讯:Argentinas Firmapaz elated with shooting bronze at Youth Olympics
国内英语资讯:China, Philippines chart course for future relations in joint statement
国内英语资讯:Chinese president back home after APEC meeting, visits to Papua New Guinea, Brunei, Philippi
国内英语资讯:China looks to further enhance APEC cooperation: FM
国内英语资讯:China tightens ban on solid waste imports
体坛英语资讯:Youth Olympics gold boosts futsals profile in Brazil
国内英语资讯:Xi arrives in PNG for state visit, APEC meeting
国内英语资讯:Commentary: Chinese wisdom a booster for global economy
国内英语资讯:China, Philippines agree to step up legislative exchanges
国内英语资讯:Xi, Moon meet on bilateral ties, Korean Peninsula situation
国内英语资讯:Spotlight: Xi calls for inclusive, rule-based world economy at APEC meeting
国内英语资讯:China, LatAm media agree to step up cooperation
体坛英语资讯:China sweep United States at Volleyball World Championships
体坛英语资讯:Saurabh extends Indias golden run in Youth Olympics shooting
体坛英语资讯:Africa Rugby expands Gold Cup tourney to eight teams
国内英语资讯:China, Hungary to enhance law enforcement, security cooperation
体坛英语资讯:World No. 1 Fan to kick off ITTF Mens World Cup campaign against Brazilian Tsuboi
国内英语资讯:Xi arrives in Brunei for state visit
国内英语资讯:Full text of Chinese President Xis speech at APEC CEO summit
体坛英语资讯:German Pascal Ackermann wins stage 2 of Tour of Guangxi
国内英语资讯:China, Kazakhstan vow to dovetail development strategies
国内英语资讯:Full text of China-Philippines joint statement
国内英语资讯:Policies refined to boost cross-border e-commerce
国内英语资讯:Chinese, Palestinian leaders exchange congratulations on 30th anniversary of diplomatic ties
国内英语资讯:China, Egypt to boost military exchanges, cooperation