Loose - Any incompatible change results in a new version of the service contract and the contract is designed to support backwards compatibility and forwards compatibility.
松散——所有不兼容的更改导致服务契约的新版本，且服务契约的设计既支持向后兼容，也支持向前兼容。
2
Use the middle finger of the right hand to push the loose end of the right lace behind, whilst the left hand simply rotates forwards to swing its loop across to the right.