The item may be missing the original packaging, or in the original packaging but not sealed.
该项目可能会丢失原来的包装,或在原包装,但不密封。
"It's a quick patch, things are sealed off and you go on - but it's not perfect regeneration," says Discher.
迪斯凯尔说:“这是快速修补程序,修补创口以便功能得以继续——但不是完美的再造过程。”
But there is a problem with using amperometric sensing: the electrodes are not sealed within the lens, and therefore are exposed.
然而,使用这项技术有一个问题:电极并没有密封于镜片内,而是暴露在外。
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