原文 Original text
繁體 Traditional
Reader's edition
計較私情 Your Snout Turns Round
行者道：「你那嘴長，馱著他，轉過嘴來，計較私情話兒，卻不便益？」八戒聞此言，搥胸爆跳道：「不好，不好。行者道：「你那嘴长，驮着他，转过嘴来，计较私情话儿，却不便益？」八戒闻此言，搥胸爆跳道：「不好，不好。
逐句解 Line by line
行者道：「你那嘴長，馱著他，轉過嘴來，計較私情話兒，卻不便益？」
行者道：「你那嘴长，驮着他，转过嘴来，计较私情话儿，却不便益？」
Pilgrim said, "That snout of yours is long. Carry her, turn your snout round, and work out a little private business with her — would that not suit you nicely?"
Here 長 is cháng, length, not the zhǎng of seniority — the same character that gave 長老, elder, a few passages back. The 著 in 馱著 is the sustained zhe, and 私情 means an affair.
八戒聞此言，搥胸爆跳道：「不好，不好。
八戒闻此言，搥胸爆跳道：「不好，不好。
When Bajie heard this he beat his chest and leapt in the air. "No, no.
搥胸爆跳 — beating the breast and bursting upward. The reaction is far too large for the accusation, which is how the reader knows it has landed.
Pilgrim has now accused his brother of exactly what his brother accused him of thirty-one passages earlier, in almost the same words. That is not carelessness by the author; it is the shape of the whole quarrel.
Bajie's reaction is worth watching because it is the loudest thing he does in the chapter. He argued the demon's case, he pulled at her ropes, he called his brother a schemer — and the moment he is asked to put her on his back he explodes. He knows precisely what he is like, which is why he will not go near it.