- 重点词汇
- 保护
protect; secure; safeguard; conserve; preserve; shield; defend; guard; shelter; screen; protective; defensive; safeguarding; protection; defence; conservation; preservation; conservancy; wardship
9220 protective shell
9220 protective shell
protect; secure; safeguard; conserve; preserve; shield; defend; guard; shelter; screen; protective; defensive; safeguarding; protection; defence; conservation; preservation; conservancy; wardship