Sng
abbr. sans notre garantie (French=without our guarantee) （法语）没有我们的保证; synthetic natural gas 人工合成天然气
🗣️ 情景例句
The welcome sign is up:
欢迎的标语已经弄好了：
To blow smoke rings
喷出烟圈
Porpoises and sharks are natural enemies.
海豚和鲨鱼是天然仇敌，