wǎsī
ㄨㄚˇ ㄙ
mainland 天然氣
Taivo → Settings → Partner inbox → Make the link. It stays in this browser.
我聞到瓦斯味。
wǒ wéndào wǎsī wèi
I smell gas.
Keep 瓦斯 and it comes back until you know it.