automatic deflation造句

a balloon when not in flight shall be securely moored, shall not be left unattended and shall be fitted with a device which ensures its automatic deflation if it breaks free of its moorings
气球应被牢固地系住及有专人看管，气球亦需安装确保脱离系留时自动泻气的装置。
It's difficult to find automatic deflation in a sentence. 用automatic deflation造句挺难的