1、In reindeer, even if they're missing a circadian clock, melatonin levels still spike when it's dark and drop when it's light, making the equinoxes an ideal time to synchronize their annual clocks.───而驯鹿呢，虽然它们没有昼夜节律钟，其褪黑激素水平仍然会在黑暗的时候上升，光亮的时候下降，从而使它们的昼夜分点达到理想状态，进而与年生物钟同步。
2、Researchers found productivity will drop by 50 per cent this week as depressed staff around the country struggle to come to terms with the dark nights closing in.───调查人员发现，本周人们的工作效率将会下降50%，因为全国上下都感到郁闷的上班族们正努力适应黑夜的来袭。
3、form where giant loops of magnetism, generated deep inside the sun, well up and burst through the surface, leading to a localised drop in temperature which we see as a dark patch.───当太阳内部深处形成巨大的磁力环，该处将会产生井喷并突破太阳表面，从而使表面的局部地区温度下降，看上去就像一个暗斑，这就是黑子的形成。
dark drop（意思翻译）
深色水滴
dark drop（相似词语短语）
1、drop over───vt.顺便来访；顺便拜访
2、clumsily drop───笨拙地跌落
3、dark───n. (Dark)《暗黑》 (Netflix)；adj.黑暗的; 深色的; 神秘的; 悲惨的; 忧郁的; XieE的；adj.黑暗的，深色的；模糊的；无知的；忧郁的；n.黑暗；夜；黄昏；模糊；n. (Dark)人名；（英）达克；n.黑暗，暗处; 暗色
4、drag drop───拖放
5、beat drop───节拍下降
6、draggle drop───拖拉
7、drop───n.滴；落下；空投；微量；滴剂；v.推动；帮助；宣扬；下降；终止
8、sweet drop───甜点
9、cram drop───补习班
dark drop（双语使用场景）
1、In reindeer, even if they're missing a circadian clock, melatonin levels still spike when it's dark and drop when it's light, making the equinoxes an ideal time to synchronize their annual clocks.───而驯鹿呢，虽然它们没有昼夜节律钟，其褪黑激素水平仍然会在黑暗的时候上升，光亮的时候下降，从而使它们的昼夜分点达到理想状态，进而与年生物钟同步。
2、Researchers found productivity will drop by 50 per cent this week as depressed staff around the country struggle to come to terms with the dark nights closing in.───调查人员发现，本周人们的工作效率将会下降50%，因为全国上下都感到郁闷的上班族们正努力适应黑夜的来袭。
3、form where giant loops of magnetism, generated deep inside the sun, well up and burst through the surface, leading to a localised drop in temperature which we see as a dark patch.───当太阳内部深处形成巨大的磁力环，该处将会产生井喷并突破太阳表面，从而使表面的局部地区温度下降，看上去就像一个暗斑，这就是黑子的形成。