那条虫向前蠕动.The worm inched along.这些神经中心产生有节奏的运动，或者更确切地说，是有节奏的肠胃蠕动。These nerve centres generate rhythmic movements; or to be more specific, rhythmic stomach movements.它就像一条大虫子在地上蠕动着前进.It'squirmed along the ground like s...
我的胳膊很累，背部肌肉紧绷得难受。My arms are tired, and my back is tense.长牙会很难受，婴儿会烦躁不安。Teething can be painful and make your baby irritable.世上最让人难受的莫过于小婴儿遭到遗弃。The saddest thing in the world is a little baby nobody wants....
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。He was destined to plod the path of toil.他注定要在艰辛的道路上跋涉.They had to plod wearily on up the hill.他们不得不迈着疲倦的步子登上山....