He was too smart to just push ahead at flankspeed and try to get out in eight months, or even in eighteen.
他太聪明了，不会盲目地加快速度推进，想在八个月或甚至十八个月内逃出去。
2
The most ominous sign that something big was brewing under the mountain developed on its north side. Within four weeks, this flank bulged out with hitherto unknown speed (see Figure 1).