难以

And so, the genetic progress of reproductive traits only depended on crossbreeding in the past years.

传统的数量遗传学在指导家畜育种中起到了重要的作用，但是繁殖性状遗传力低、性状表现晚、而且是限性遗传，通过常规选择难以有所进展。

Issue of the technology when telegraphic branch is carried out with act is solved hard for, also hold crosscurrent.

电信部门则以法案实施时技术问题难以解决为由，也持反对意见。

I think the crown princess had an unimaginably hard time due to the strong pressure, which is incomparable to us.

她说：我想太子妃度过了常人难以想象的艰难时期，这都是由于面临巨大的压力，而那些压力是我们不能相比的。

Without art the crudeness of reality would make the world unbearable.

没有艺术，枯燥的现实将使世界难以承受。

Life is a bottle of cruet, including acid, sweet,bitter, perppery and salty.

生活是一瓶佐料瓶，包括酸，甜，难以接受，perppery 和咸。

They will be able to better explain the more cryptic parts of the license.

他们将可以更好地解释更加难以理解和零件的使用许可。

Cubism was hard to read, willfully ambiguous, and yet demotic too.

立体派是难以理解的，蓄意地暧昧不明的，也尚未通俗的。

For a long time,neither traditional treatment nor operation treatment is effective actively on reducing the rate of occurrence of cubitus varus.

长期以来，保守和手术疗法均难以降低肘内翻发生率。

Cuirass = Your zombies attack faster, making more zombies, more zombies equal better push bigger army, means harder to stop, better chance of taking down towers/raxes.

强袭装甲=你的僵尸攻击速度变快，这样可以繁殖更多僵尸。更多僵尸意味着更快的推倒强大的敌人，也意味着难以阻止，更多机会推塔。

Diplomats say it will also make it harder for North Korea 's main ally, China, not to accept the regime's culpability.

外交官们认为这一情况也让朝鲜的主要盟友中国更加难以否认朝鲜在事件中的责任。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。