nebulae

将“nebulae”拆分为“nebul-a-e”，先记住“nebul-”意味着“云雾”或“模糊”，因为“nebula”是星云的意思。然后“-a-”保持中性，最后“-e”可以想象为“更多的”，因为“nebulae”是复数形式，代表“星云”的多个。整体记忆为“多个模糊的云雾”，这样有助于记住这个词的意思和复数形式。

1. You can see nebulae in the clear summer sky.

在晴朗的夏夜可以看到天上的星云.

2. The element hydrogen comprises 90 % of the matter in gaseous nebulae.

元素氢占气体星云物质的百分之九十.

3. Some nebulae appear to be completely engulfed by exceedingly large molecular clouds.

有些气体星云似乎被极其巨大的分子云完全包围.

4. The spiral nebulae are impressive objects.

旋涡星云是迷人的天体.

5. Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry.

行星状星云是一类孤立的气体星云,具有相当程度的双侧对称性.