F 1 females could be backcrossed to the male homozygous recessive parent.也可用雌性F1与隐性纯合雄性亲本回交....

at a crossroads的音标：at a crossroads的英式发音音标为：[æt ə 'krɔsrəʊdz]at a crossroads的美式发音音标为：[æt e 'krɔsˌrodz]...

Place the sling crossbar under and forward of the bumper.将车门门槛横梁放在保险杆的前下方.Wanfeng ring inside out, xuan bi precipitous cliffs, ravines crossbar.境内万峰环列, 崖悬壁峭, 沟壑纵横.Like high jumpers, pole - vaulters attempt to clear a cro...

backcross的现在进行时为：backcrossing...

crosswind的复数形式为：crosswinds...

cross-check的现在进行时为：cross-checking...

The doctor was killed in crossfire as he went to help the wounded.那位医生去救助伤员时在交叉火力中丧生。When two industrial giants clash, small companies can get caught in the crossfire.两大工业企业争斗之下, 小公司遭受池鱼之殃.The child was standing in the m...

n.横档，横杆...

get across的音标：get across的英式发音音标为：[ɡet ə'krɔs]get across的美式发音音标为：[ɡɛt ə'krɔs]...

crosswinds的音标：crosswinds的英式发音音标为：[krɒs'wɪndz]crosswinds的美式发音音标为：[krɒs'wɪndz]...

The superb sets are enhanced by Bobby Crossman's marvellous costumes.博比·克罗斯曼绝妙的服装为华丽的舞台增色不少。The new architecture was needed to accommodate the Crossman's all - wheel drive system and higher ride height.新的结构,有必要...

There are hefty charges across the board for one-way rental.各处对单程租赁的收费都很高。The President promised across-the-board tax cuts if re-elected.总统许诺如果能再次当选将采取全面的减税措施。It is very cold outside, you'd better come indoors acros...

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The fields are crisscrossed by irrigation canals and ditches.田野上沟渠纵横.The paths crisscrossed in the fields.阡陌纵横.Bangkok is crisscrossed by a network of klongs.曼谷有纵横交错的运河网....

crosswise的音标：crosswise的英式发音音标为：['krɒswaɪz]crosswise的美式发音音标为：['krɔswaɪz]...

crossover的音标：crossover的英式发音音标为：['krɒsəʊvə(r)]crossover的美式发音音标为：['krɔsoʊvə(r)]...

double-cross的一般过去时为：double-crossed...

put sth across的音标：...

n.横风，侧风...

crosspiece的音标：crosspiece的英式发音音标为：['krɒspi:s]crosspiece的美式发音音标为：['krɔspis]...

She finished third in the world cross-country championships in Antwerp.她在安特卫普的世界越野锦标赛上获得了第3名。The cross-country section of the three-day event was held here yesterday.3日比赛中的越野项目昨天在这里举行。He quickly converted me to the joys ...

Take a right turn at the crossroads.在十字路口右转弯。Our army stole a march on the enemy and reached the crossroads an hour ahead of them.我军偷偷地抢在敌军前面行动,比他们早一小时到达十字路口。He had reached a crossroads in his career.他的事业发展到了一个十字路口。The c...

n.（昔日的）石弓，弩( crossbow的名词复数 )...

n.纵横字谜...

adv.横地，相反地，故意为难地，乖戾地...

across the board的音标：across the board的英式发音音标为：[ə'krɔs ðə bɔ:d]across the board的美式发音音标为：[ə'krɔs ði bɔrd]...

n.斑马线...

Don't try and double-cross me, Taylor, because I'll kill you.别跟我耍花招，泰勒，要不我会杀了你。Mr Arbor squawked that the deal was a double-cross.阿伯先生大声抱怨说这笔交易是个骗局。Be careful he doesn't double - cross you.当心别让他出卖你....

crossbar的音标：crossbar的英式发音音标为：['krɒsbɑ:(r)]crossbar的美式发音音标为：['krɔsbɑ(r)]...

backcross的第三人称单数（三单）为：backcrosses...