181.ChancesarethatmanwilleventuallylandonMars.
182.ThelikelihoodforpeaceintheMiddleEastremainsquestionable.
183.Thenecessityfornuclearnonproliferationseemsclear.
184.Itisperhapsmoreaccuratetoconsiderthefamilyasablanketofsecurity,ratherthanacloakofbondage.
把家庭看作保护安全的毯子可能比把它看做束缚的斗篷更确切。
185.Whilegeneralizationsaredangerous,itisquitesafetopresentsolidevidence.
抽象概括是危险的,但是,提供确凿的证据是万无一失的。