Immunisation
n. 免疫(immunization)
🗣️ 情景例句
Please, sit down.
请坐。
I want to go coach, and I'd prefer a morning flight.
我要普通舱，还有，我喜欢早上的班机。
or through hiring it, the total expense can be far less than the cost of hotels.
总费用算起来要比住旅馆开支少得多。