直立行走使父亲可以用手收集食物并从远处把食物带给他的配偶。
Walking upright permitted the father to use his hands to gather food and carry it to his mate from a distance.
有两条直立的梯子的支柱，一条以蓝色表示，另一条以黑色表示。
There are two upright struts of the ladder, one shown in blue here, the other shown black.
成年时，他用两只脚直立，年老时，他用一根棍子支撑着蹒跚的双腿。
When in manhood, he goes erect on two feet and when in old age, he supports his tottering legs with a stick.
散步可以帮助你直立和获得地心重力的作用，去防止胃酸上溅到食道上。
Walking keeps you upright and enlists gravity to keep acids from splashing up the esophagus.
他的背部一点一点地舒展和拉直，直到突然他直立起来，成了真正的男人。
Bit by bit, his back uncurls and straightens until all of a sudden there is he, upright, truly a man.
如果脑子比较小的古猿不是工具制造者，那他们直立行走的进化优势是什么？
If the small-brained australopithecines were not toolmakers, what evolutionary advantage did they gain by walking upright?
各种骨骼的形状和结构也必须加以调整，以使肌肉在直立行走时能够执行这些功能。
The shape and configuration of various bones must likewise be modified to allow the muscles to perform these functions in upright walking.
他们还相信移动这些摩埃石像仅需要很少的人力且不需要木材，因为它们是直立地“走”过去的。
They also believe that moving the moai required few people and no wood, because they were walked upright.
作为用两条腿直立行走的间接副产品，对手的过分关注帮助大多数文化产生了数字，但并非所有文化都是如此。
This manual fixation—an indirect by-product of walking upright on two legs—has helped yield numbers in most cultures, but not all.
一头用两条后腿直立行走的新泽西州的黑熊已经成为社交媒体的宠儿，距离上次被目击的几个月后，它再次出现并被拍了视频。
A New Jersey black bear that walks upright on its two back legs and has become a social media darling has re-emerged and has been captured on video months after its last sighting.
此外，尽管人类直立行走已经有数百万年的历史，我们的脚和背部仍在两足行走的姿势中艰难斗争，无法轻易承受过长的四肢持续施加的压力。
Moreover, even though humans have been upright for millions of years, our feet and back continue to struggle with bipedal posture and cannot easily withstand repeated strain imposed by oversize limbs.
这匹马后腿直立，将骑手摔下。
那匹马后腿直立，把骑手摔了下去。
马猛然跃起，用后腿直立。
他粗硬的红头发根根直立。
他们认为特殊的引力可以帮助鸡蛋直立。
They think special gravitational forces (引力) can help eggs stand on their ends.
例如，有些人认为，筷子不应该直立插在碗中。
For example, some people believe that chopsticks should not be left standing upright in a bowl.
事实上，这一年里的任何一天，你都可以把鸡蛋直立起来。尝试一下吧，很有趣的。
Actually you can balance an egg on its end any day of the year. Have a try for fun.
答案是：不要用直立的、平行的墙壁。
例如，在印度尼西亚的一个博物馆里，直立猿人被描绘成具有马来人的面部特征，因为这符合公众的认知。
For example, Pithecanthropus erectus is depicted in an Indonesian museum with Malay facial features, because this corresponds to public perceptions.
交感肾上腺系统不能维持直立位的脑灌注压。
The sympathoadrenal system is unable to maintain cerebral perfusion pressure in the upright posture.
我的相机直立放置，矩形部分南北放置。
My camera stands rectangularly with the rectangular part running north and south.
东非直立人仅在 Sediba 已知年代的20万年后就已经抵达了西亚。
Homo ergaster had reached western Asia just 200, 000 years after A. Sediba's known date.
人类为何进化到了直立行走的姿态？
现代主义是从固定角度来看是直立的。
And modernism is all about verticality, from a certain Angle.
在坐着或走路时脖子保持直立
Try to maintain an upright posture while sitting or walking.
树和房子不再直立了，它们开始倾斜。
The trees and houses were no longer upright. They were slanting.
在一次会议中，他直立着。
在90度直立坐姿时，椎间盘的移动最明显。
Disk movement was found to be most pronounced with a 90-degree upright sitting posture.
从这里，小腿向上伸展，全身直立。
From this position, stretch your legs up into the full pose.
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