burdensome

Small business owners complain that the new tax regulations are excessively burdensome.

(Chinese) 小企业主抱怨说，新的税收规定负担过重。

He found the duty of caring for the large estate alone to be increasingly burdensome.

(Chinese) 他发现独自照看这座庞大庄园的职责变得越来越沉重。