如果可以的话，定期花点时间到大自然中去。
实际上它们是定期为6到10年的存单。
Actually, they are certificates of deposit for maturities of six to ten years.
从温哥华到西雅图有定期客船吗？
Is there a regular passenger ship from Varcouver to Seattle?
有定期船和小巴服务到海滩。
孕妇应定期到医院做产前检食。
The pregnant woman should do regularly to the hospital pre-natal examines the food.
到中国去的平信要靠船运。而船的航班是不定期的。
Ordinary mail to China goes by boat and the sailings are irregular.
但仍然还是有不少人没有意识到定期体检的重要性。
闲适地或不定期地从一个地方到另一个地方，尤指无目的或无固定职业地。
To move leisurely or sporadically from place to place, especially without purpose or regular employment.
闲适地或不定期地从一个地方到另一个地方，尤指无目的或无固定职业地。
To move leisurely or sporadically from place to place, especially without purpose or regular employment.
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