急下降

Dizziness, headache, tinnitus, vision loss, behavioral abnormalities, unresponsiveness, memory decline, involuntary drooling mouth, side of limb numbness, inability or activity problems, palpitation, chest tightness, chest pain, amaurosis eyes, cough, dyspnea activity, paroxysmal nocturnal dyspnea, lower extremity edema and so on.

头晕，头痛，耳鸣，视力减退，行为异常，反应迟钝，记忆力下降，嘴角不自主流口水，一侧肢体麻木、无力或活动不灵，心慌，胸闷，胸痛，眼前黑朦，咳嗽、活动时气急，夜间阵发性呼吸困难，下肢浮肿等。

Kelly maneuvered aggressively—jinking up and down, performing quarter rolls to veer around mesas, dropping into ravines and pulling up at the last instant to avoid a crash headlong into a wall.

凯丽有闯劲的机动着——闪动下降，围着台地表演四分之一弧度的滚动，下降到峡谷里，在最后一刻急停避免船头撞进峭壁。

Carry a warm clothing, in case of suddenly decease of temperature at night.

带上一件暖和的毛衣，因为夜间气温会急骤下降。

Take a warm sweater because the temperature will dorp down at night.

带上一件暖和的毛衣，因为夜间气温会急骤下降。

Major results were summarized as follows:(1) A total of 58 tree species from 53 genera in 36 families among which 8 species were Rosaceae, 5 species were Liliaceae, 5 species were Eriaceae, 3 species were Ranunculaceae, 3 species were Compositae, 2 species were Cupressaceae, 2 species were Caprifoliaceae, 2 species were Umblliferae, and other 28 tree species were only one receptively. These were recorded in the 8 plots of the A. georgei var. smithii forest;(2) Number of families, genera, species and Margalef index correlated negatively with altitude (P.05), with a peak at 3600 m.(3) Shannon-Wiener index correlated negatively with altitude (P.01), and maintained stable at the altitudes between 3700~4100 m, evenness with altitudes, however, this trend was insignificant.(4) Jaccard index increased sharply with increasing altitude at the altitudes between 3600~4100 m, and was lower between different vegetation types at the altitudes between 4100~4200. Cody index β(subscript c decreased with an increasing altitude, but there were 2 troughs between 4000~4100 m and 4200~4300 m.(5) Maximum tree height H(subscript max and HH(subscript max=37 mcorrelated negatively with altitude (P.05); but basal area and BA BA(subscript max=5.3m^2 correlated with altitudes, however, this trend was insignificant.

结果表明：(1)在调查的8个急尖长苞冷杉林样地内共有植物58种，分属于36科53属，其中植物较多的科有蔷薇科8种、百合科5种、杜鹃花科5种、毛茛科3种、菊科3种、柏科2种、忍冬科2种、伞形科2种，其余的28科各只有1个种；(2)物种科、属、种数、Margalef指数D(下标 M与海拔存在显著的负相关性(P.05)，在分布急尖长苞冷杉最低海拔3600m处出现物种丰富度的最大值；(3)多样性指数与海拔之间有极显著的负相关性(P.01)，并且在3700~4100m之间多样性指数保持稳定；均匀度指数与海拔梯度之间存在负相关性，但不显著；(4)Jaccard指数C(下标 j在海拔3600~4100m随海拔的升高而升高，在生境过渡带的4100~4200m之间Jaccard指数C(下标 j较低；Cody指数β(下标 c随海拔的升高呈下降的趋势，但在4000~4100m和4200~4300m 海拔区间出现2个低谷；(5)最大树高H(下标 max和最大胸径DBH(下标 max与海拔之间存在显著负相关性(P.05)；胸高断面积之和和立木密度与海拔之间存在负相关性，但不显著。

Results indicate: after compelling exposal, with the increase of low lighting level, the three reaction time curves have a same decline tendency, and there is an effective inflexion at 50 lx lighting level.

结果表明：在三种曝光强度下，随着视标照度水平的提高，受试者判别反应时曲线都呈先急后缓的下降趋势，并在视标照度为50 lx时出现一有效拐点。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。