横向
1
Gas form of a liquid
4
Biological catalyst
5
Ball of burning gas in space
8
Gas essential for breathing
纵向
2
Substance with pH above 7
3
Infectious microscopic agent
6
Force that attracts objects together
7
Tissue that contracts for movement
Gas form of a liquid
Biological catalyst
Ball of burning gas in space
Gas essential for breathing
Substance with pH above 7
Infectious microscopic agent
Force that attracts objects together
Tissue that contracts for movement