沒有桅篷 No Mast And No Sail
在肚裡將鐵棒撐著肚皮。那怪物肚皮貼地，翹起頭來，就似一隻贛保船，八戒道：「雖是像船，只是沒有桅篷，不好使風。」行者道：「你讓開路，等我叫他使個風你看。」在肚里将铁棒撑着肚皮。那怪物肚皮贴地，翘起头来，就似一只赣保船，八戒道：「虽是像船，只是没有桅篷，不好使风。」行者道：「你让开路，等我叫他使个风你看。」
逐句解 Line by line
Inside, he propped the iron rod up against the belly wall.
將 is the object-hauling jiāng, and 著 the marker zhe.
The creature's belly flattened to the ground and its head tilted up, so that it was just like a Gan-bao boat. Eight Rules said, "It may look like a boat, but there is no mast and no sail, so it can take no wind."
只 is zhǐ, "only" — automatic transcription reads the preceding character together with it as a word meaning "ship" and supplies zhī, which is a different word altogether. Narrative and speech share this one unit because the edition sets a comma, not a full stop, before 八戒道.
Pilgrim said, "Stand out of the road, and I'll have him take the wind for you to look at."
讓開路 — "clear the road" — is the first sign that the next demonstration will involve movement.
The bridge pattern repeats without a change: an item produced, an objection on practical grounds, an offer of the next item. Eight Rules wants a mast and a sail, which is a fair complaint about a boat and an absurd one about a snake.
What has changed is the instruction at the end. 你讓開路 is not part of the performance. It is a warning, and it is the only one Pilgrim gives.
The joke about the mast is the last of the three and the one that pays. Eight Rules has just asked for something to be driven up through the creature's back, and he is about to get it.