Trimetaphosphate
三偏磷酸盐
🗣️ 情景例句
Hello, hello.... Oh, hi, Susan.
喂 喂……啊 嗨 Susan
This is a rather old house. It needs painting.
这房子挺旧的，得刷一下才行。
How long will your offer hold good?
一般你们报价的有效期是多长？