Hot air balloons have burners to keep the air hot.动词不定式做定语还是做目的、结果状语?

Hot air balloons have burners to keep the air hot.动词不定式做定语还是做目的、结果状语? Why should we never ask balloons for advice?key :they are full of hot air.为什么? 英语翻译Hot-air balloons rise in the morning sun in Western Japan.Some 110 balloons took part in the five-day balloon festival and more than 800,000 people watched the matches. HOT AIR的意思 hot-air是什么意思 hot air引申义是什么 The children （ ）（吹起） their balloons and threw them in the air. HOT AIR GUB翻译成中文 hot-air balloon的意思急 first hot air balloon啥意思? fairy,reporter,hot air balloon是什么意思? rise like a hot-air balloon是什么意思? 俚语Don't hot air 准确点, full of hot air的意思,具体 it cooled down the hot air The hot air makes the balloon stay up(划线提问) The hot air 划线 balloons是什么意思 fly in a hot air balloon什么意思