Celatom
硅藻土
🗣️ 情景例句
I keep in touch with my family regularly.
我定期和家里保持联系。
Once an opportunity slips away, it is gone for good.
机会一旦错过，永远不会再来。
But people who are cut off not only from foreign tourists, but even from their own countrymen can be hostile to travellers.
但是，那些不但与外国旅游者隔绝，而且与本国同胞隔绝的人们有可能对游客抱有敌意。