停: to stop, to halt, to park (a car)...
呵: expel breath, my goodness...
蛇: snake, serpent...
问世: to be published, to come out...
针对: to target, to focus on, to be aimed at or against, in response to...
筛: to filter, to sift, to sieve...
作风: style, style of work, way...
群: group, crowd, flock, herd, pack etc...
旅程: journey, trip...
顿时: immediately, suddenly...