Sillar
n. [地]未固结熔灰岩, 未固结火山凝灰岩
🗣️ 情景例句
Hello. Susan Stewart calling Mr. Levine, please.
喂 ，Susan Stewart想跟Levine先生通话。
I didn't think I'd see you here.
没想到会在这碰上你。
and that this happens at a rate which differs little from person to person,
衰老的速度在人与人之间相差甚微，