burthen
n. 负荷；载重量；重荷；负担
v. 使负重担；累
例句
Knowledge is no burden [burthen].
知识绝非负担。艺多不压身。
His yoke is easy and His burthen is light.
他的轭是容易的，他的担子是轻省的。
Quantity in tube is the cable with burthen.
穿管根数指有负荷发热的电缆， 根数。
