Aircraft production continued to plod along at an agonizingly slow pace.飞机制造业仍旧举步维艰，发展速度之缓很让人头疼。Progress was agonizingly slow.进展的缓慢让人备受煎熬。an agonizingly slow process极其缓慢的过程...
The tortoise crept along at an agonizingly slow speed.乌龟以极其缓慢的速度爬行着.Aircraft production continued to plod along at an agonizingly slow pace.飞机制造业仍旧举步维艰，发展速度之缓很让人头疼。Progress was agonizingly slow.进展的缓慢让人备受煎熬。an agonizingly...