It is valid until...
[化] 有效期至...
🧩 词语组成解析
it
[ɪt]
pron. 它;他;正好是所需的;事实[情况];
n. <美俚>傻瓜，笨蛋;<俚>绝妙的人;理想的东西;登峰造极;
is
[ɪz]
vt.& vi. 是（be的三单形式;
n. 存在;
🗣️ 情景例句
Excuse the mess. I just moved here.
请不要介意这里乱得很 我刚刚搬来住。
Competition between bidders for this valuable painting has been keen.
拍卖时各出价对这幅名画竞争很激烈。
They will be trying to keep order.
他们将设法维持秩序。