Pma
[化] 均苯四酸
🗣️ 情景例句
Richard feels we need to find a small house. Richard
觉得我们需要一个小住宅。
No one can call back yesterday.
往日不复返。
The little baskets were empty and the ground was covered with pieces of paper, cigarette ends, old tyres, empty bottles and rusty tins.
废物筐是空的，而满地都是纸片、烟头、旧轮胎，空瓶子和生锈的空罐头盒。