发动机发出了一种新的声音, 仿佛一阵阵吃力的哮喘.A new noise came from the engines a straining, gasping sound.我离那头麋鹿非常近，能听见它吃力的呼吸声。I was close enough to the elk to hear its labored breathing.清除积雪是很吃力的工作.It's hard work shifting snow....
To use a bootstrap loader routine.使用引导装入程序.The operational stability is design goal of the loader's working device too.作业平稳性是装载机工作装置设计的目标之一.The fault diagnosis module is important in the bucket loader automation sys...
Cytokinesis is of the simultaneous type and microspore tetrads are mainly tetrahedral.小孢子母细胞减数分裂为同时型.Complete disintegration of cytoplasm of crescent or irregular shape of microspore .25.月牙形和不规则形小孢子细胞质完全解体.Meiosis of mic...