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1·Carry this bag—it's the lightest.

你拿这个包—它最轻。《牛津词典》

2·Also, because the molecular motion of a gas depends on temperature, at the low temperatures of the Jovian planets even the lightest gases are unlikely to acquire the speed needed to escape.

此外，由于气体的分子运动依赖于温度，在木星行星的低温下，即使是最轻的气体也不可能获得逃逸所需的速度。

3·Mars is the lightest planet in the solar system, which makes Mars the second smallest planet in the solar system.

火星是太阳系中最轻的行星，这使得火星成为太阳系中第二小的行星。

4·The clock, called Sleep Smart, measures your sleep cycle, and waits for you to be in your lightest phase of sleep before rousing you.

这个被称为“智能睡眠”的闹钟会测量你的睡眠周期，等你进入最浅的睡眠阶段后再叫醒你。

5·It's the lightest of the structural metals.

是最轻的结构金属。

6·It is the largest and lightest airplane ever built.

它被认为是有史以来所制造的最大且最轻的飞机。

7·Neutrinos are the lightest elementary particles we know of.

他说：“中微子是我们所知的基本粒子当中最轻的一个。

8·All I can say is that this is the lightest and most tasteful of the excerpts.

我想说这是暴露描写中程度最轻和最令人舒服的一段。

9·Has the lightest and most abundant stuff in the universe found a new role in energy?

宇宙中最轻和最丰富的原料在能源领域找到了而它的新角色了吗？

10·As the lightest gas, hydrogen is the one that most easily overcomes a planet's gravity.

由于氢气是地球上最轻的气体，因此最容易挣脱地球引力。