Laval nozzle
[化] 拉伐爾噴嘴; 縮擴(kuò)噴嘴
?? 詞語(yǔ)組成解析
a. 熔巖的,像熔巖的, 似熔巖般灼熱的
nozzle
['n?zl]
n. 管嘴，噴嘴;〈俚〉鼻子;
??? 情景例句
The times have been very bad.
時(shí)機(jī)一直很壞。
Messengers should neither be headed nor hanged.
兩國(guó)相爭(zhēng)，不斬來(lái)使。
but each year, the dogs are still sent out into the snow whenever a traveller is in difficulty.
但每年還要派狗到雪山地里去幫助那些遇到困難的旅游者，