Indispensible
不可或缺
🗣️ 情景例句
But, like your Grandpa suggested,
但是， 照你爷爷所建议的，
If you are interested, I will prepare a list of them.
如果您感兴趣的话，我可以列表让你参考。
The pilot managed to circle the balloon for some time.
飞行员设法绕着气球飞了一阵。