一口吞之 Swallowed At One Gulp
隨後行者趕到,那怪也張口來吞,卻中了他的機關,收了鐵棒,迎將上去,被老魔一口吞之。諕得個獃子在草裡囊囊咄咄的埋怨道:「這個弼馬溫,不識進退。随后行者赶到,那怪也张口来吞,却中了他的机关,收了铁棒,迎将上去,被老魔一口吞之。諕得个呆子在草里囊囊咄咄的埋怨道:「这个弼马温,不识进退。
逐句解 Line by line
Wukong came up behind, and the creature opened his mouth for him too — and he walked right into the contrivance, put away his iron rod, went up to meet it, and was swallowed by the old fiend at one gulp.
中 is zhòng here, to be struck by or fall into — the sealed chapters read 中了 that way at both their sites, both of them about poison. 機關 is a mechanism, a contrivance, a trap with moving parts.
The Idiot was so appalled that he lay in the grass muttering and grumbling: "That Keeper of the Horses — no idea when to advance and when to fall back."
埋怨 is mán yuàn, to complain — the character reads mái, to bury, everywhere else, and the sealed chapters have it that way at both their sites. 囊囊咄咄 is a four-character mutter. And Bajie has reached for the insult everyone reaches for: the stable job.
Note the two words the narrator chooses: 中了機關, he fell into the mechanism. This was not an ambush that happened to work, it was a device — the retreat, the slope, the wind, the true form, the open mouth — and Wukong put away his weapon and walked into it.
不識進退, no sense of when to advance and when to withdraw, is a phrase out of the military classics, and Bajie is using it correctly. He does not know it yet, but he is also wrong: Wukong put the rod away on purpose, and being swallowed is about to turn out better than fighting.