1.dark matter 暗物质

Astronomers nicknamed this unseen mass dark matter.

天文学家将这种不可见物质通俗地称为暗物质C+mNuYfQvbT;OE*Z。

2.arcane 神秘的，晦涩难懂的

Some see our troubles as tied to the arcane rules of the institution, particularly the Senate.

有人认为，问题根源在于机构内部的隐晦难懂的章程，特别是参议院的u^yJ)45UiHr|h_zae3。

3.fluke 侥幸

The discovery was something of a fluke.

这项发现多少有点侥幸+ibot%m;p0X8EJF。

4.choosy 好挑剔的

Virgos are very choosy about their lover.

处女座对爱人十分挑剔zI90~QAX*t。