Alkalsite
阿克赛混合炸药
🗣️ 情景例句
May I ask where you are from?
我可以请问你是哪里人吗？
He who would climb the ladder must begin at the bottom.
爬梯必须从底层开始。
You'll have to wear this hard hat for the tour.
参观时必需戴上这安全帽。