1611 Cotgr. ,Poisamment, heauily, weightily, burthensomely. 
1848 J. S. Mill Pol. Econ. II. v. vi. §3. 425That as few employments as possible may be burthensomely and vexatiously interfered with. 
| 词汇 | burthen- | 
| 词根词缀 | OED 
 
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