Silvisar
二甲胂酸
🗣️ 情景例句
Where are you going during Summer vacation?
暑假你打算去哪儿？
Marriage is a lottery.
婚姻是一件难于预料的事。
But a watch could never repair itself----it does not consist of living parts,
但是，手表决不会自行修理，它不是由有生命的部件组成，