The Hubble Space Telescope completed its one millionth scientific observation in July.

今年7月哈勃望远镜完成了第1百万次科学观测。

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Radiation in rainwater in British Columbia was less than one millionth the amount shown to cause thyroid diseases.

不列颠哥伦比亚地区在雨水中监测到低于导致甲状腺疾病当量百万分之一的辐射量。

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In the UK drinking water can contain no more than 100 micrograms of THM per litre. A microgram is one millionth of a gram.

在英国每升饮用水中三卤甲烷（THM）不允许超过 100 微克（ 一微克是一克的一百万之一）。

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The company says it will sell its one millionth digital pen this year.

FORBES: Connect

By the end of August Chery will celebrate making its one millionth car.

FORBES: Magazine Article

The one millionth passenger travelled at around 14:00 GMT on 10 January.

BBC: London