每隔一天

"Unless one were looking up this matter in particular, he could have stood at Sixth Avenue and Fifteenth Street for days around the noon hour and never have noticed that out of the vast crowd that surged along that busy thoroughfare there turned out, every few seconds, some weather-beaten, heavy-footed specimen of humanity, gaunt in countenance and dilapidated in the matter of clothes."

除非是特别留意这种事情，否则一个人可以在中午时分，在第六大道和十五街的拐角处站上好几天，也不会注意到，在这繁忙的大街上蜂拥的人群中，每隔几秒钟就会出现一个饱经风霜、步履沉重、形容憔悴、衣衫褴褛的人。

This is not a big issue, since all it means is that every 3 months for this first year I just have to hop on a train to Hong Kong, stop for a cup of hot chocolate and then hop right back on the train to mainland.

90天。这不算个大问题，因为所有这些只能说明我在这第一年里，每隔三个月我得跳上火车去趟香港，在那呆满喝一杯热巧克

Near the bottom corner of the house, there is an intriguing variable star called Delta Cephei. With clock-like precision, this rather faint star doubles in brightness every 5.36 days.

靠近房子底部的角落，有一颗有趣的变幻的星星叫仙王座δ，就像时钟那样准确，这颗暗淡的星星每隔5.36天都会变得加倍的光亮。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。