Spring tides occur every two weeks, usually within a few days of the new and full moon.
春潮每间隔1周出现1次，通常出现在离开新月和满月几天之内。
An extra-close new moon accentuates these monthly spring tides all the more.
一个特别接近地球的新月更加促使了每月的涨潮现象。
Solar tides are added to lunar tides to form the unusually high and low spring tides.
太阳引起的潮汐加到月亮引起的潮汐上，形成涨潮特高落潮特别低的大潮。
When the sun and the moon pull at the same time, tides are highest and are called spring tides .
当太阳和月亮同时吸引时，潮水的水位最高，这种潮水叫做大潮。
When the moon is full or new, attraction is high, and the oceans bulge outward, creating spring tides.
当圆月或新月，引力较强，海水向外膨胀，引起朔望大潮。
Large tidal range occurs twice a month during spring tides, when the moon is new or full.
每当新月或满月的时候，潮差特别大，这个时期叫做大潮。
Spring tides: Semi-diurnal tides of large range occur when the moon is new or full.
大潮：出现在每个月朔或望的时期，潮差特别大的潮汐。
protected from spring tides by a palisade
为了抵御大潮，围了一排栅栏
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