Forbidden transitions are those for which dipole radiative transitions are not allowed by the selection rules.

Any heteronuclear diatomic molecule must have a dipole moment since its two ends are different.

任何异核双原子分子必然具有偶极矩,因为它的两端是不同的.

The attraction between covalent bonds molecules is the interaction of electrical dipole moment.

共价键分子间的吸引力是电偶极矩的相互作用.

The dipole does not radiate energy in the direction of its axis.

偶极子在它的轴的方向上不发射能量.

The left wing dipped until it was perpendicular to the ground.

左翼下垂至与地面成90度角。

He dipped his headlights as they came up behind a slow-moving van.

当他们靠近一辆缓慢行驶的货车时，他把汽车前灯调成了近光。

Unemployment dipped to 6.9 per cent last month.

上个月失业率降到了6.9%。

After the pot is dipped in this mixture, it is fired.

陶罐在这一混合料中浸过之后就拿去烧制。

She dipped a quill in ink, then began to write.

她将羽毛笔在墨水里蘸了一下，随后开始书写。

The international exchange rate dipped to a low point yesterday.

昨天,外汇兑换率下降到低点.

He dipped the brush into the paint.

他拿画笔蘸了蘸颜料。

The sailor dipped the ship's flag as a salute.

水手将船上的旗降下来再上去以示致敬.

She dipped a hand into the jar of sweets and pulled one out.

她把手伸进糖果罐，摸出了一颗糖。

Can you see the Great Dipper?

你能看到北斗七星 吗 ?

Modern stargazers sometimes mistake it for the asterism known as the Little Dipper.

现代天文学家有时会把它误认为小熊星座.

It's much more dipper-like than the actual Little Dipper in the northern sky.

在北方的天空中,它比真正的小北斗七星看起来更像北斗七星.

She tilted the dipper , drew a deep breath and drank swiftly.

她端着勺子深深闻了一下,便迅速喝起来.

He returned to find the knight drinking slowly and sparingly from the iron dipper.

迈克尔将木桶放在马匹身前.

He handed the dipper back to Nikol.

他将长勺交还妮可.

These six little starlets create the tiny dipper-shaped formation that is well known the world over.

这就是闻名于世的以这六颗小星星构成的迷你版的北斗星云.

She take a dipper of hot suds from the tub.

她从浴池里汲出一勺热的肥皂水.