simple english questions

Vietnam's revolution leader
一個用了revolutionary 另一個用了 revolution
那個正確 有什麼分別?
答:先說revolutionary=意思是形容革命性的東西=未必是講革命的事件因此用revolutionary來形容某人或leader的意思不是說發動革命的那個人而是某人發揮革命性(改變某政策或移風逆俗的影響)的作用。
總結回答:如果內容是講越南60年代的共產革命事件的人物應該是Vietnam’s revolution leader才對 = 胡志明但假如是在談近年對越南的政治/經濟/社會民生(假設共產主義沒有革命性的改變)的話寫成Vietnam’s revolutionary leader亦是可以的寫法。

The pull of the embalming fluid becomes still more puzzling when a country has politically moved on.
這個是被動式嗎? has politically moved on.
答:不是被動式…不看politically這個副詞(=形用動詞的形容詞)這句的動詞是… when a country has moved on[現在完成式]

Lenin has so far survived several attempts to evict him from Red Square
這個是被動式嗎?has so far survived
答:不是!類似上題…把附加的形容(so far)除去
Lenin has survied…[現在完成式]
s v o
Lenin 是subject [正確]has survived 是verb [動詞不計so far]
several attempts to evict him from Red Square是object? [可以說正確…更正確的文法是object clause]

China's politicians can still quote the sayings of Mao while pursuing policies widely at variance with his legacy.
你選用詞語跟英文意思不符，我會譯作:
中國政客(政治領導)仍會引用毛主席的銘言，但推動政策時跟他的遺風卻是大相徑庭。

the speed of censorship uncovered on Sina Weibo is astonishing
s v o
the speed of censorship 是s [正確]
is astonishing是verb [simple present continuous tense]
uncovered 只是past participle形容那speed of censorship?

It's using a translation tool provided through Microsoft's Bing search engine to convert Arabic messages into other languages
找s v oSubject = ItVerb = is usingObject = a translation tool