端對端加密和私隱控制選項。
在世界各地都能免費*傳送訊息並進行通話。
群組對話易如反掌。
運用貼圖、語音和 GIF 等方式表達。
隨時隨地接觸顧客。
Coal mining in Wales: the 1930s writers who depicted the environmental calamity caused by the pits https://invesbrain.com/coal-mining-in-wales-the-1930s-writers-who-depicted-the-environmental-calamity-caused-by-the-pits/