英语新闻听写 摄入过多糖类对癌细胞非常有利

Sugar is bad for you, right? Everybody knows that. But it's very good for one thing--cancer cells. According to Science Magazine, cancer tissues have extra sugars that bind¹ to the protein Siglec-9 on natural killer² cells.

糖对身体有坏处，对吗？人人都知道。但是它对一样东西特别有利——癌细胞。根据《科学杂志》，癌组织上有与自然杀伤细胞蛋白样凝集素9捆绑在一起的额外糖类。

In doing so, they quiet the immune response and make the body less able to fight off the deadly enemies. To our defense³ system, cell-surface sugars are a molecular⁴ fingerprint--and a type of Harry⁵ Potter-like invisibility cloak--telling a roving immune cell, "This one's OK. Move along." Certain pathogens, such as the bacteria that cause gonorrhea or streptococcal infections, have taken advantage. They coat themselves with sialic acids to hide from the immune system.

这样它们就能平息免疫反应，让身体无法对抗致命的癌组织。对防御系统而言，细胞表面的糖类就是分子指纹，它们像穿着一层隐身衣一样，甄别移动的免疫细胞，“这个没问题，继续走。”有些病原体，比如导致淋病或链球菌感染的细菌正好利用了这一点。它们用唾液酸将自己包裹起来躲避免疫系统的侦查。

1 bind   

vt.捆，包扎；装订；约束；使凝固；vi.变硬

参考例句：

• I will let the waiter bind up the parcel for you.我让服务生帮你把包裹包起来。
• He wants a shirt that does not bind him.他要一件不使他觉得过紧的衬衫。

2 killer   

n.杀人者，杀人犯，杀手，屠杀者

参考例句：

• Heart attacks have become Britain's No.1 killer disease.心脏病已成为英国的头号致命疾病。
• The bulk of the evidence points to him as her killer.大量证据证明是他杀死她的。

3 defense   

n.防御，保卫；[pl.]防务工事；辩护，答辩

参考例句：

• The accused has the right to defense.被告人有权获得辩护。
• The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。

4 molecular   

adj.分子的；克分子的

参考例句：

• The research will provide direct insight into molecular mechanisms.这项研究将使人能够直接地了解分子的机理。
• For the pressure to become zero, molecular bombardment must cease.当压强趋近于零时，分子的碰撞就停止了。

5 harry   

vt.掠夺，蹂躏，使苦恼

参考例句：

• Today,people feel more hurried and harried.今天，人们感到更加忙碌和苦恼。
• Obama harried business by Healthcare Reform plan.奥巴马用医改掠夺了商界。