Emigration to the West reached a peak in the 1830's.
向西部迁移的行为在19世纪30年代达到顶峰。
Cave art seems to have reached a peak toward the end of the Upper Paleolithic period, when the herds of game were decreasing.
洞穴壁画艺术似乎在旧石器时代晚期达到了顶峰，而当时猎物的数量正在减少。
Paul Wignall and others have found sites where marine fossil deposits reached a peak of diversity at the very end of the Permian period.
保罗·维格纳尔和其他人发现了在二叠纪末期海洋化石沉积达到多样性高峰的地点。
American art reached a peak of creativity in the '50s and '60s.
20世纪五六十年代，美国艺术的创造力达到了顶峰。
The larvae must feed during their trip, and their springtime release coincides with a peak in algae raining down from surface waters.
幼虫必须在旅途中进食，而它们在春天的释放正好赶上了藻类从地表水倾泻而下的高峰。
Performance is lowest between 3 a.m. and 5 a.m., and reaches a peak near midday.
工作状态凌晨3点到5点最差，近中午时分达到最高点。
China will bring its total greenhouse gas emissions to a peak before 2030.
中国的温室气体排放总量将在2030年之前达到峰值。
The total numbers were at least 12,500 men up to the reign of the emperor Hadrian (A.D.117-138), with a peak around A.D.80.
到哈德良皇帝的统治时期时（公元117至公元138年），总人数至少为12500人，大约在公元80年的时候达到人数的顶点。
Profits reached a peak in winter.
利润在冬季达到了最高点。
This is now reaching a peak of intensity.
目前强度正在达到峰值。
The cost hit a peak of 425,000 euros on Feb. 4.
2月4日，这一成本曾达到425,000欧元的峰值。
The index had been declining steadily from a peak in early 2009.
这一指数在2009年早些时候就已经逐步跌下峰值。
Its population had dwindled to 3,000 from a peak of 15,000 in the 1970s.
人口数量从70年代的巅峰时期15000人下降到3000人。
Its workforce has shrunk from a peak of 5,400 before 2001 to 3,800 today.
其员工从2001年前5400人的峰值减少到今日的3800人。
That compares with a peak five-year default rate of 45% during the 1930s.
这与20世纪30年代，五年最高违约率45%形成对照。
Its population had dwindled to 3, 000 from a peak of 15, 000 in the 1970s.
人口数量从70年代的巅峰时期15000人下降到3000人。
Its workforce has shrunk from a peak of 5, 400 before 2001 to 3, 800 today.
其员工从2001年前5400人的峰值减少到今日的3800人。
The nine tonnes of extra drag will give us a peak deceleration of minus 3g.
额外的9吨阻力会产生高达-3g的减速效果。
New infections have also fallen, from a peak of 3.2m in 1997 to 2.7m last year.
同时，新感染的人数也从1997年最高峰时段的320万回落到去年的270万。
Memphis reached a peak of prestige under the 6th Dynasty as a centre of the cult of Ptah.
孟斐斯在第六王国时期作为卜塔祭祀的中心，达到了声誉的顶峰。
You shouldn't try to overexert yourself to reach a peak fitness level or train for a race.
你不可以用力过度来达到身体健康的巅峰状态，或者去为比赛而训练。
The Icelandic central bank’s benchmark interest rate has fallen to 4.5%, from a peak of 18%.
冰岛央行的基准利率从最高峰18%下调到4.5%。
Goldenrod comes by mid-August, but rises to a peak of golden abundance in early September.
黄花在八月中旬含苞欲放，待到九月初花重四野，遍地金黄。
The ratio of housing loans to GDP is still only 15.3%, compared with a peak of 79% in America (see chart 2).
住房贷款量仅占GDP的15.3%，而美国最高到达79%。 （见表二）。
There was a peak of nearly 50 specialist firms working the NYSE floor in 1990. That has dwindled to five now.
在鼎盛时期的1990年，纽约证交所的交易大厅有近50家特种经纪人服务公司，现在已经锐减到5家。
There was a peak of nearly 50 specialist firms working the NYSE floor in 1990. That has dwindled to five now.
在鼎盛时期的1990年，纽约证交所的交易大厅有近50家特种经纪人服务公司，现在已经锐减到5家。
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