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- It is necessary that he be sent there at once. 有必要马上派他到那里去。
- She writes to her parents once a week. 她每周给父母写一封信。
- Product once moldings, Change traditional cut out wear comfortable, By high temperature high pressure shapes behind, Possesses color voluptuous, Feel soft, Does not loose unremitting wait for feature, Very incurs consumer favor on international market. 产品一次成型，改变了传统的裁剪穿着舒适，经高温高压定型后，具有颜色艳丽，手感柔软，不松不懈等特点，在国际市场上很受消费者青睐。
- More than once I've felt my heart slip a cog. 我不止一次感到心脏突然停跳一下。
- My inn had once been a part of an ancient ecclesiastical house. 我的客栈曾经是一个古老教会的房子的一部分。
- He and I were shipmates on a trawler once. 我与他一度同在一艘拖网船上工作。
- It was once thought unmanly not to drink and smoke. 身为男子不抽烟不喝酒曾视为无男子气概。
- The flue should draw better once it's been swept. 烟道一经清扫，通风情况应好些。
- You'll like her once you get to know her. 你一旦了解她，就喜欢她了。
- He likes to hit the bottle once in a while. 他喜欢偶尔喝得酩酊大醉。
- She looked in on us [at our office]once in a while. 每隔些时候，她都到我们这儿[办公室]来一趟。
- I've decided to break with Silvia once and for all. 我决定同西尔维亚彻底绝交。
- Once I took a wife I should have to put down roots. 我一旦娶了老婆，就该过安定的生活了。
- Barry only visits his parents once in a blue moon. 巴里很难得去看望他父母一次。
- The leap year comes around once in four years. 每四年有一个闰年。
- Such evil practice cannot be swept away at once. 这种坏事不是一下能扫除干净的。
- The teacher asked the pupils not to speak at once. 老师叫学生们不要同时说话。
- I have seen this happen more than once. 发生这种事我屡见不鲜。
- At once he slew him and set Io free. 他立刻杀死了阿尔戈斯，放掉了伊俄。
- Once installed, this heater operates automatically. 一旦安装好以后，这加热器就会自动地运行。
