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单词
sunspot cycle
释义
WordReference Random House Unabridged Dictionary of American English © 2024
sun
′
spot cy′cle,
[
Astron.
]
Astronomy
the cycle, averaging in duration slightly more than 11 years, in which the frequency of sunspots varies from a maximum to a minimum and back to a maximum again.
Cf.
solar cycle.
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learned profession
learned society
learner
learning
learning curve
learning disability
learning--disabled
learning-disabled
learning resources center
learning support assistant
learnt
leary
leasable
lease
leaseback
leased
leasehold
leaseholder
leaseless
leaseman
lease-purchase
leaser
lease rod
leash
leash law
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更新时间:2026/7/15 3:34:32