obstruct 是什么意思呀？

obstruct (v.)

1. 阻塞、堵塞、阻挡（道路、通道、或入口等）

2. 阻碍、阻止、阻挠、妨碍

After the earthquake, many roads were obstructed by collapsed buildings.

地震过后，许多道路被倒塌的建筑物堵住了。

The group is trying to obstruct the peace process.

这团体试图阻挠和平进程。

The intro 

(Listening Comprehension)

Yo, what's up peeps? It's Mr.Wong here. So the weather is getting pretty damn hot and you know what that means? Those pesky mosquitoes are out to get you! 

Have you ever wondered why mosquito bites itch? When a mosquito bites, it pierces your skin and draws blood with the tip of its straw-like mouth, or proboscis. In the process, the mosquito injects some of its own saliva, which contains an anti-coagulant that prevents your blood from clotting around the proboscis and trapping the insect. 

Keep in mind that only female mosquitoes which need the nutrients from blood to produce eggs, bite. Your immune system recognizes the proteins in the mosquito’s saliva as a foreign substance and “mounts an immediate attack,” releasing histamine as part of the immune response. It’s the histamine reaction that causes the itching, the histamine also causes your blood vessels to enlarge, creating the wheal, or swollen bump, around the bite.

Hah, those god damn pesky mosquitoes...anyways, it's time for our word of the day which is "obstruct", let's check it out!

没看懂？请自己查字典！

(这才是真正的学习过程)

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