我们通常吃一种叫元宵的汤圆。

We usually eat a kind of rice dumpling called yuanxiao.

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老师布置家庭作业时，学生们通常感觉做作业是一种义务。

When teachers assign homework, students usually feel an obligation to do it.

《柯林斯英汉双解大词典》

原因之一是，看电影通常是一种社交活动。

One reason is that going to the cinema is generally a social activity.

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Often it's a salt called phosphocholine and so you get a phospholipid that's made of choline and two lipid chains.

它通常是一种叫磷酸胆碱的盐,这样你就得到了一种,由胆碱和两条脂肪链构成的磷脂

耶鲁公开课 - 生物医学工程探索课程节选

It consists of a promise to pay, usually denominated in currency, and there are both long-term and short-term debt instruments.

是一种付款承诺,通常是货币支付形式,有长期债券,以及短期债券

耶鲁公开课 - 金融市场课程节选

The pressure points come when the issues are so close to the bone that a variety of people don't feel that they had the luxury to do that, that their interests, their commitments are threatened.

有时也有一些压力,这时话题通常比较敏感，许多人,觉得言论自由成为了一种奢侈品，他们的兴趣和信仰都受到了威胁。

普林斯顿公开课 - 人性课程节选