laborious

adj. /ləˈbɔːriəs/ C1

费力的；艰苦的

Needing a lot of time and hard physical effort.

仙境例句

Picking up every little pebble from the floor was a laborious job for the Rabbit.

把地上的每一颗小石子都捡起来，对白兔来说是件又费时又费力的活儿。