It is likely that the warm water consistently exits at these locations, but in years that are free of sea ice (like 2011), the polynyas aren't visible and so this cannot be confirmed from images.

有可能暖流一向在这几个地方冒出，但在没有海冰的年份里(例如2011)，并不能看到冰穴，所以不能仅从图片上确认这一点。

youdao

In accordance with the problem that water and ice cannot be discriminated by the traditional fiber-optic icing sensor, this paper put forward a novel fiber-optic double-probe icing detection system.

针对传统光纤式结冰传感器无法对冰和水进行识别的问题，提出了一种新型的光纤式双探头结冰传感器系统。

youdao

In accordance with the problem that water and ice cannot be discriminated by the traditional fiber-optic icing sensor, this paper put forward a novel fiber-optic double-probe icing detection system.

针对传统光纤式结冰传感器无法对冰和水进行识别的问题，提出了一种新型的光纤式双探头结冰传感器系统。

youdao