ростовщик(Shylock was a character in one of Shakespear's plays (The Merchant of Venice). He was a Jewish usurer, so saying that a person is a Shylock means he's a loan shark)
без понятия(Jane: Are there any good movies playing tonight? Alan: Your guess is as good as mine; Jill: How long should we bake this pie? Jane: Your guess is as good as mine)
согласно оценкам(Estimates have it that at least half of the 110 million children receiving no education live in countries where there is or has recently been armed conflict)
по первому зову(кого-либо; All these followers... were ready at his whistle to array themselves around him – Все его сторонники... готовы сплотиться вокруг него по первому зову)
система поиска ответов(Search engines have essentially become answer engines. Their job is no longer resource discovery, but rather to answer users' questions; Google is becoming an answer engine. With the growth of mobile devices & voice search, a list of results is not acceptable)
невзирая на критику(NHS (National Health Service), despite being the target for regular criticism, it nonetheless still does its basic job of providing medical care to anybody regardless of their financial and social background)
Кухонные дебаты(a series of impromptu exchanges through interpreters between U.S. Vice President Richard Nixon and Soviet First Secretary Nikita Khrushchev at the opening of the American National Exhibition at Sokolniki Park in Moscow on July 24, 1959 wikipedia.org)