The methane cycle plays a key role in the carbon cycle.

甲烷循环在碳循环中扮演关键角色。

Let's plan a group cycle ride this weekend.

这个周末让我们计划一次集体骑行吧。

She loves to cycle through the park every morning.

她每天早上都喜欢骑自行车穿过公园。

Seawater is part of the water cycle.

海水是水循环的一部分。

I need to cycle my way back home after work.

我下班后需要用自行车回家。

The factory operates on a 24-hour cycle production schedule.

这家工厂实行的是24小时轮班生产制度。

He decided to cycle instead of taking the bus today.

他决定今天骑自行车而不是坐公交车。

Her life was a continuous cycle of misery.

她的生活是一个痛苦的循环。

Education can help break the cycle of poverty.

教育可以帮助打破贫困的恶性循环。

Estrogen helps regulate the menstrual cycle in women.

雌激素有助于调节女性的月经周期。