Duplication can be created by unequal crossing over, retroposition, or whole genome ( or chromosomal ) duplication.

Their first problem was crossing over a mountain.

他们首先面临的问题是必须翻越一座高山.

They headed the storm crossing over Alps to Italy.

他们迎着暴风雪越过了阿尔卑斯山脉,朝着意大利进发.

Literally crossing over from one type of song to the next.

就像名字所意,这首中曲把歌的风格从一种转到了另一种.

Okay, this is crossing over into a scary place.

好吧这就有点过头了.

Plantar gasket ( sole ) have special function characteristic, OK and fast conveniently crossing-over.

脚底衬垫 ( 鞋底 ) 具有非凡的性能特点, 可以快速方便地互换.

Two London Buses Is Crossing Over The River Thames.

两部伦敦巴士横夸泰晤士河.

Mainly used in places such as crossings, engineering construction, road maintenance and intersections.

主要用于道路路口 、 工程施工 、 道路维修、叉道口等场所.

In spring and after heavy rains, streams can change from trickles torrents, making crossings difficult.

在春季或是大雨之后, 小溪可能会从涓涓细流变得洪水滔滔, 给涉水造成困难.

The transmission tower line system of the large crossings consist of conductor and tower-pole structures.

大跨越输电塔线体系是由导线和输电杆塔构成的结构体系.

He has insisted that Shalit's release happen before Israel re-opens crossings with Gaza.

他坚持沙里特必需首先获释,以色列才会重新开放加沙的过境点.

Most good drivers stop at zebra crossings.

大多数好司机都会在斑马线前停车.

Crossing the driveway to take crossings.

横过车行道,须走人行横道.

The physics of the ball during headers and crossings has been adjusted.

皮球在头球和传中球时的物理性已经被调整好.

Tongpu Dayun highway and railway crossings, railway stations have beans LAW.

大运公路和同蒲铁路过境, 有豆罗火车站.

The crossings of streets are generally marked by brass studs.

街道的横越处是普遍用黄铜钉做记号.

Topcoat: gantry walking agencies paint yellow-and black zebra crossings.

面漆: 龙门架行走机构油漆成黑黄 相间 斑马线.

The long whistles came with sad, musical effect as the lonely woodland crossings were approached.

当火车驶近荒凉的林地中的道口时,便传来长长的汽笛声,充满忧伤的 、 音乐般的韵味.

You'll find deer crossings whichever road you take.

不管你走哪条路,都能发现鹿走过的路.

They have planted machine-guns at street crossings.

他们在十字路口设置了机枪.

He has made several crossings on the Atlantic aboard S . S . Queen Mary.

他好几次乘玛丽皇后号轮船横渡大西洋.