syntax = "proto3"; // 指定使用proto3版本
[단독]폴란드, 韓 해군 최초 잠수함 ‘장보고함’ 무상 양도 안받기로
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"There should have been lots of penguins there, but actually we could only see 25 groups," he said. Groups vary in size from 10s to up to 1,000 birds.
There are two main types of smoke alarm tech, says Raman Chagger, principal consultant at BRE, the Building Research Establishment. Ionisation-based systems use a tiny amount of radioactive material to charge, or ionise, particles in the air which flow between two small plates. Should smoke interrupt that flow of charged particles, the alarm goes off.