Rhepanol
合成异丁烯橡胶
🗣️ 情景例句
Can you tell me where the tourist sites are located?
你能告诉我本地有什么旅游名胜吗？
I'm twenty-one years old.
我21岁。
He explained that his diet was so strict that he had to reward himself occasionally.
他解释说，他的饮食控制得太严格了，以致不得不偶尔奖赏自己一下。