很多人以为各国持有美债是一种正常的投资行为：美债安全、流动性好、收益稳定，所以全球央行把外汇储备买成美债，合情合理。
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This is a well-known browser security technique. In JavaScript, calling .toString() on a native browser function returns "function appendBuffer() { [native code] }". Calling it on a JavaScript function returns the actual source code. So if your appendBuffer has been monkey-patched, .toString() will betray you; it’ll return the attacker’s JavaScript source instead of the expected native code string.
Instead of revealing any of this to the jury, Hunter and Moore tallied Friedmann’s vandalism. They calculated that, between the expenses of replacing all the locks and keys in the jail, paying overtime to staff who reviewed footage, and renting jail space (from C.C.A.) for inmates who couldn’t move in because of the investigation, Friedmann had cost the sheriff’s office the equivalent of $1.5 million—six times the figure needed to convict.