laborious解釋adj. 形容詞 1. 費力的，麻煩的。
adv. 動詞 副詞 -ly ,-ness n. 名詞
Chemical degradations are laborious and time-consuming.
At the beginning of 20 century, midi boots with bootlace were becoming prevalent in us. whitcomb judson, a retired fat football player had to spend much time in putting on his boots every morning. to ease the laborious work, he managed to invent a zip - fastener, which allowed him to put on his shoes just in a few seconds. this is the naissance of zipper in the world
You may have the impression that this process is usually laborious.
The computation of approximate solutions was an extremely laborious task.
On the contrary, i took up another resolution, which was more safe, though more laborious.