问如何将`0.pool.ntp.org`放在`/etc/nftables.conf‘中而没有任何错误？

EN

$ sudo nft -v
$ nftables v0.9.0 (Fearless Fosdick)
$ sudo nft -f /etc/nftables.conf
/etc/nftables.conf:8:7-19: Error: syntax error, unexpected string, expecting comma or '}'
     0.pool.ntp.org,
      ^^^^^^^^^^^^^
/etc/nftables.conf:9:6-6: Error: syntax error, unexpected number
     1.pool.ntp.org,
     ^
/etc/nftables.conf:10:6-6: Error: syntax error, unexpected number
     2.pool.ntp.org,
     ^
/etc/nftables.conf:11:6-6: Error: syntax error, unexpected number
     3.pool.ntp.org
     ^
/etc/nftables.conf:12:1-1: Error: syntax error, unexpected '}'
}