《晋书·列传·第十章》
然而这次外出，推辞实在太难。惟有与太子结成婚姻，不用费事就自然可以留下了。 
然是行也，辞之实难，独有结婚太子，不顿驾而自留矣。 
However, it would be too difficult to turn down this trip. Only by forming a marriage alliance with the Crown Prince could he remain without having to do anything.
<s>[INST] Transpose the following Modern Chinese text into Classical Chinese: 然而这次外出，推辞实在太难。惟有与太子结成婚姻，不用费事就自然可以留下了。  [/INST] 然是行也，辞之实难，独有结婚太子，不顿驾而自留矣。 </s>
Transpose the following Modern Chinese text into Classical Chinese: 然而这次外出，推辞实在太难。惟有与太子结成婚姻，不用费事就自然可以留下了。
user
然是行也，辞之实难，独有结婚太子，不顿驾而自留矣。
assistant