单语范例（未经PONS编辑处理）
Weeding by hand is laborious and poor weeding limits yield.
en.wikipedia.org The same is true of the radio compartment where structural repairs are underway following the laborious task of stripping paint.
en.wikipedia.org The discoveries, papers, and treatises previously mentioned might well have formed the whole work of a long and laborious life.
en.wikipedia.org In the monastery he did most of the laborious tasks, being physically stronger.
en.wikipedia.org To separate the parts is very laborious, keeping intact the sewing ring, which will be used in the coupling of the new valve.
en.wikipedia.org