have a high fever 发高烧
高烧 :high fever
“to talk nonsense”是胡说八道的意思，因发高烧而说胡话是指在神志不清的情况下语无伦次地说话，英语更适宜翻译为“to be delirious”
（这个孩子在发高烧时说胡话，讲了一些奇怪的事。）翻译：
“ The child had a high fever and became delirious. ”或“The child became delirious with a high fever.”例如“ During the fever, the child became delirious and said some strange things.”
