Nanocatalyst
纳米催化剂
🗣️ 情景例句
That'll be fifty-five dollars and twenty cents.
一共55元2角。
Fear is often greater than the danger.
杞人忧天。
As the play draws to its close, they wonder whether they will ever catch that last train home.
当戏快演完时，他们又为是否能赶上末班火车回家而犯愁。