Firstly, the system barrier must be eliminated, urban-rural laborers' rights and interests should be defended, and they should be given more rights and opportunities to participate in community.

首先，要消除制度壁垒，切实维护农民工的各项权益，扩大农民工社区参与的权利、机会。

youdao

If the cells did cross the placental barrier, the child's immune system should have recognised them as foreign invaders and destroyed them.

如果癌细胞确实穿过胎盘屏障，孩子的免疫系统应该会将它们视为入侵者，从而消灭它们。

youdao

It is enclosed by the blood-retina barrier, keeping viruses in and the immune system mostly out.

血视网膜屏障包围着眼睛，把载体限制在内的同时，几乎把免疫系统阻隔在外。

youdao

But with threats, a language barrier and fear of the legal system, victims are often unwilling or unable to seek help.

VOA: special.2010.06.14

Some form what are called megakaryocytes which become platelets, which are responsible for clotting, for forming a barrier if your circulatory system gets injured so you don't bleed.

还有一些类型的细胞称为巨核细胞,生成有凝血作用的血小板,在你的循环系统受损时形成止血屏障

耶鲁公开课 - 生物医学工程探索课程节选

For example, the Great Barrier Reef in Australia is the largest coral reef system in the world.

VOA: special.2009.04.22

We require a multiple layer barrier system in our well designs, which greatly minimizes offshore drilling risks.

FORBES: Shell To Feds: We're Already Safe, Let Us Drill

The supermarkets have already responded with several schemes which includes Tesco stores in Cardiff installing a mini-barrier system on its disabled car parking spaces.

BBC: Van in a disabled space

The pervasive complexity level of our tax system creates a barrier for taxpayers, wealthy or not, in their annual self-assessment attempt to arrive at a substantially correct determination of their tax.

FORBES: Tax Complexity, Confusion And Compliance