Nerve gases are clear and colorless, and they can be odorless or have a slight, sweetish smell.
Nerve gases are clear and colorless, and they can be odorless or have a slight, sweetish smell.
神经毒气透明无色，可以是无气味的也可以是稍带甜味的。
Nerve gases are clear and colorless, and they can be odorless or have a slight, sweetish smell.
神经毒气透明无色，可以是无气味的也可以是稍带甜味的。