Or alert in the middle of the night when they should be asleep.

或者在午夜应该睡觉的候，他们却特别机警。

Inventor Alexander Arguelles, who speaks 50 languages, suggests that you do it while walking swiftly to maximise alertness and blood flow!

发明家Alexander Arguelles，会说50种语言，他建议在快走进行跟读练习，因为快走提升机警性和血流量。

" To be on the ball" , be on the ball, well, to be on the ball means that you are quick, alert and sharp, right?

随机应变。Be on the ball 的意思是你动作敏捷、机警、机敏。

The glyptodont is short-sighted and wary, but it has little to fear from llamas.

雕齿兽目光短浅并十分机警，但是美洲驼对于来说也并无可怕之处。

He was quite sharp enough to see that.

斯茂的机警不会把这一层忽略的。

This man was described by Usher and Windsor as appearing alert and in control.

厄舍和温莎形容他表现得机警、镇定。

But the prey she seeks are canny.

可是她的猎物十分机警。

He would lie by the hour, eager, alert, at Thornton's feet, looking up into his face, dwelling upon it, studying it, following with keenest interest each fleeting expression, every movement or change of feature.

他会长间卧在桑顿脚边，热切而机警地望着桑顿的脸，在那张脸上看了一会儿，端详着，以极的兴趣追踪着每一个转瞬即逝的表情，面部每一个动作或变。

" Range of sweets to make you ill, " George whispered, keeping a wary eye on Mrs Weasley's back, " Not seriously ill, mind, just ill enough to get you out of a class when you feel like it."

“这是一系列会使你生病的糖果，”乔治一边小声说道一边用机警的眼神望着韦斯莱太太的背影，“放心，并不是什么严重的疾病，仅仅是当你感到有必要的话，让你病到足以中途退堂。”

If he can come in quiet enough, he can reach underneath and rip the insides of the Gastonia open, but the Gastonia's lookouts are on full alert.

如果地靠近就抓到加斯顿龙身下，让变得开膛破肚，不过加斯顿龙的瞭望员机警异常。

Which is why you may reach for another cup throughout the day to maintain that glorious, alert and energetic feeling.

你一天内可需要不止一杯咖啡来保持良好，机警和有活力的感觉。

Watchful Plants by Erica Tennenhouse Plants cannot run or hide, so they need other strategies to avoid being eaten.

《机警的植物》 作者：艾丽卡·田纳豪斯植物不跑也不躲藏，因此们需要其他避免被吃掉的战略。

Turning quickly she frequently caught him watching her, an alert, eager, waiting look in his eyes.

她突然一转身，常常发现他在看她，眼中流露出机警。殷切与等待的神情。

As they circled about, snarling, ears laid back, keenly watchful for the advantage, the scene came to Buck with a sense of familiarity.

当他俩兜着圈子, 咆哮着, 耳朵倒贴着头皮, 机警地寻找着战机, 巴克感到非常熟悉这个场面。

Where he had once been lounging and indolent, he was now as alert as a prowling cat, with the tense alertness of one whose nerves are perpetually drawn as tight as the strings of a violin.

他以前是散慢的，懒洋洋的，可现在已变得像猫一样机警，仿佛每一根神经都绷得很紧，像小提琴上的琴弦那样。

Their eyes were always alert, like men who have lived too long with danger to be ever quite careless.

他们的眼睛始终很机警，好像很久以来一直生活在危险之中，不敢有一点疏忽意。

All passiveness and unconcern had dropped from them. They were alert and active, anxious that the work should go well, and fiercely irritable with whatever, by delay or confusion, retarded that work.

消失了所有的消极和淡漠。他俩变得机警而活跃, 一心要使工作进展顺利, 不管耽搁还是乱阵, 只要工作被延误, 他俩就发雷霆。

Don't you cry! You go over to post headquarters and ask the officers.

" 他说到这便打住了，一面机警地注视着思嘉。" 怎么，太太，你别哭呀！你到那边总部去问问那些当官的。

About his body there was a peculiar springiness, or resiliency, almost catlike, and a quick alertness as of one who lived in perpetual fear of things seen and unseen.

他周身充满一种奇特的弹性, 和猫差不多, 而且特别机警, 那是生活在看得见或看不见的永恒危险中的人才有的机警。

For when she thought of Rhett, with his swarthy face, flashing teeth and dark alert eyes, a trembling came over her.

雾气在她周围缭绕，她也毫不注意，因为她在想瑞德，想像他那张黝黑的脸，他那雪白的牙齿和机警的眼睛，她正兴奋得浑身哆嗦呢。