🧩 词语组成解析
non
[[nɔn]]
adv. 非, 不
pathogen
['pæθədʒ(ə)n]
n. 病菌，病原体;
🗣️ 情景例句
All right, let's get down to business.
好，我们来谈正事吧。
Take it easy.
别紧张。
The second marks the arrival of transverse vibrations which travel more slowly and arrive several minutes after the first.
然后记录下的是横向波的到达，横向波比纵向波传播得慢，在纵向波到达几分钟后才能到达。