An open mind is like a fortress with its gate unbarred and unguarded.

存妄思则如开门而揖盗。（开放的心灵是没有门与守卫的城堡。）

An unbarred door; went through the unlatched gate into the street; an unlocked room.

没锁的门；经过开着的大门走到街上；没锁的屋子。

Its massive oaken door stood unbarred. Within was a small chamber, chilly as an ice-house, and walled by Nature with solid limestone that was dewy with a cold sweat.

巨大的橡木门没上门闩，里边有个小室，寒气逼人，四周是天然的石灰岩墙壁，上面水珠晶莹透亮。