In winter the effect was found to be insignificant.

在冬季，这种作用是不明显的。

youdao

In winter, for better effect, please heat it up on the heating pipe before using.

冬季使用时再暖气上加热使用效果更佳。

youdao

In winter, for better effect, please heat it up on the heating pipe before using.

冬季使用时再暖气上加热使用效果更佳。

youdao