横向
1
Positive particle in nucleus
4
Second lightest element
5
Our home planet
8
Measure of matter in an object
纵向
2
Chemical element in table salt
3
Gas form of a liquid
5
Biological catalyst
6
Gas essential for breathing
7
Push or pull on an object
Positive particle in nucleus
Second lightest element
Our home planet
Measure of matter in an object
Chemical element in table salt
Gas form of a liquid
Biological catalyst
Gas essential for breathing
Push or pull on an object