When the time to start writing, I found myself word loss, thought blocking, or a blank.

当要开始写作的时候，就发现自己词穷，思路闭塞或一片空白。

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For instance, eruptions during the snowball-Earth period are thought to have added sulfur particles to the atmosphere, blocking sunlight and cooling the planet.

比如，在“雪球地球”时期火山爆发使得空气中增加了硫粒子，它阻挡了太阳光线，使地球冷却。

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GD2 is thought to help conceal the tumor from the patient's immune system, so blocking it with the antibody opens the cancer to attack.

所以用抗体阻止GD2的功能，免疫系统就能找到肿瘤细胞，进而消灭肿瘤。

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They thought that by blocking these receptors with druglike chemicals they might shut down the signals for tumor growth.

FORBES: Targeting Tumors

Bed-blocking is often thought to occur due to a lack of care home places for the elderly.

BBC: Gloucestershire hospitals failing over 'bed-blocking'

These are compounds of oxygen, sulphur, selenium and tellurium that are thought to be particularly suitable for thermoelectric applications because their structure allows electric currents to flow while blocking thermal currents.

ECONOMIST: Thermoelectrics