if (currentStep.type === 'Success' || currentStep.type === 'Failure') {
(*) denotes a blurb came from a prior list.
，更多细节参见safew官方版本下载
From a former fisher’s cottage a stone’s throw from the water, to a majestic Arts and Crafts house near a path to the beach
var carFleet = function (target, position, speed) {