Polythiourea
聚硫脲
🗣️ 情景例句
Are you sure? But ... OK.
你确定吗？ 但……算了。
If only our team had scored one more point.
要是我们队再多得一分就好了。
Hello, Zhou Lan. This is Bruce.
你好，周兰。我是布鲁斯。