Be available
[经] 生效, 有效, 可供使用
🧩 词语组成解析
be
[bi]
v. 是;有，存在;做，成为;发生;
aux. 用来表示某人或某物即主语本身，用来表示某人或某物属于某一群体或有某种性质;
🗣️ 情景例句
That's very nice of you.
你真是太好了。
How many passengers were on the train?
在火车上有多少旅客？
I say, shall we go downtown this evening?
喂，今晚我们上街怎么样？