近场通信是一种近距离、高频率无限技术，可以允许手机等设备和其它近场通信设备进行数据交换。

NFC is a short-range, high-frequency wireless technology which lets devices, primarily mobile phones, communicate with other NFC devices in order to exchange data.

youdao

船舶航行无限航区，受通信、海况、天气等影响难以获得厂商和故障诊断与维护中心强有力的技术支持。

Due to the barrier of communication, rough sea conditions, bad weather and other factors, it is hard for ocean-going vessels to obtain technical support from the manufacturers and maintenance center.

youdao