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When a car is stopped at a traffic light, for example, the signal can suddenly become noisy and distorted.
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举例来说，当车子停在红绿灯前时，讯号可能突然变得吵杂而失真。 |
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When a car's rear end doesn't want to go around a corner and tries to overtake the front end as the driver turns in towards the apex.
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是指当车手试图在顶点过弯时，车身尾部无法沿着正常轨迹线转过弯道，并且试图甩过车身前部。 |
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When a catalytically active enzyme forms a complex with a cofactor a holoenzyme is produced.
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酶蛋白和辅助因子两者结合成完整分子时，形成具有活力的全酶。 |
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When a caterpillar sheds its final exoskeleton and mutates into a chrysalid, it is already well on its way to becoming a butterfly.
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当毛虫脱掉最后的外骨骼，变成蝶蛹时，它已踏上了化蝶之路。 |
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When a cell needs to make new proteins, the helix untwists and the rungs split apart so the cell's machinery can read the code.
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当细胞需要制造新蛋白质时，双螺旋就拆解开来，其中的横梯也一分为二，让细胞里的装置可以读取编码。 |
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When a change comes, some species feel the urge to migrate.
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当环境突变来临时，一些物种迫切于转移。 |
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When a character reaches a suitably high level, level 40 or higher it can start specializing in skills to become a hero class as found in Warcraft III.
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当一个角色达到一个比较高的等级时（40或更高），就可以开始对技能的专精从而成为一个英雄职业，如在魔兽3中所看到的一样。 |
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When a charged particle is in a magnetic field, it tends to travel along that field's lines of force, spiralling as it goes.
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当一个带电微粒在磁场中时，它会倾向于沿着磁力线螺旋运动。 |
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When a charged particle zips through the chamber, the vapour condenses into a trail of droplets showing the particle's path and, if the box is placed in a magnetic field, its electrical charge.
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当一个带电粒子快速穿越云室时，水汽会凝结形成一串小液滴，这样便标识出了该粒子的路径；若将容器置于一个磁场中，还能知道粒子所带电荷的性质。 |
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When a child arrived late, I went through an elaborate ceremony of taking the watch from my pocket and staring at its face; far more dramatic than glancing at a wristwatch.
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孩子们迟到时，我如同检查一次精心准备的典礼，从口袋中拿出怀表，并盯着表盘看上一会儿；这比看手表舒服多了。 |
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When a child becomes familiar and interested in the concept of the “future” such as “wait a minute” or “tomorrow”, parents can gradually introduce the days of the week to have him become familiar with the concept of time.
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当孩子对「未来」感到兴趣时，「等一下」或「明天」可能已经不敷使用了，父母可开始用星期几等专有名词来让孩子熟悉时间长短。 |
