And what happens is blood flow to the brain swings high and low.

流向大脑的血液会上下波动。

Roses carpeting the ground; Thrushes, orioles, warbling sound: Swing me low, and swing me high, To the warm clouds of July.

玫瑰花铺满了整个大地；画眉、黄鹂，婉转的叫声, 把我摇高又摇低，摇进七月温暖的云朵里。

Friends and mentors and other business leaders warned me that the entrepreneurial journey was filled with dramatic mood swings, highs and lows.

朋友、导师和其他商业领袖警告我，创业之旅充满了戏剧性的情绪波动、高潮和低谷。

Boys, on the other hand, are taught to play rough, swing high, crawl to the top of the monkey bars and then just jump off headfirst.

男孩们，另一方面来说，被教育成要更加勇猛，冲击更高的目标，爬上单杠最高的那层然后往下跳。

Swing sets, however, can be a little dangerous because if you swing too high it's possible for you to fall off.

然而，秋千可能有点危险，因为如果你摆得太高，你可能会掉下来。

Then our hands seized a branch and swung us high into a tree, with no aim save the wonder of learning the strength of our body.

然后我们的手抓住一根树枝， 把我们高高地甩到一棵树上， 除了学习我们身体力量的奇迹外， 别无目的。

Korak ran from the tent just in time to see the enraged elephant's trunk encircle the beast's victim, and then hammock, canopy and man were swung high over Tantor's head.

科拉克从帐篷里跑出来，正好看到愤怒的大象的鼻子包围了野兽的受害者，然后吊床、天篷和人被高高地甩到坦托尔的头上。

Wheeling upon him with the fury of a wounded lioness Meriem grasped the long revolver by the barrel, swung it high above her head and crashed it down full in Malbihn's face.

梅里姆像受伤的母狮一样怒气冲冲地向他扑来，抓住枪管握住长长的左轮手枪，将它高高举过头顶，砸在马尔比恩的脸上。

One hand holding tightly to a fistful of Harry's hair, to make sure he did not fall into the heaving sea of burning gold, Griphook seized the hilt of the sword and swung it high out of Harry's reach.

拉环一只手紧紧抓住哈利的一撮头发以免他坠入上升的金海，一面握住剑柄把它举到哈利够不着的地方挥舞着。

Resonance can increase the amplitude of an oscillation by applying force at just the right frequency -- kind of like how you can get a kid to swing higher by pushing at just the right moment.

共振可以通过以恰到好处的频率施加力来增加振荡的幅度——有点像你可以通过在恰到好处的时刻推动孩子让孩子摆动得更高。