翻译成英语：对于需要报废的机器,一定要得到上级的批准.

Question

翻译成英语 ：对于需要报废的机器,一定要得到上级的批准.

Answer 1

对于需要报废的机器,一定要得到上级的批准.Approval of higher authority should be obtained for any machines to be scrapped.
更为庄重的说法是：
No machine should be discarded until the approval of superior authority has been given.
注：在合同,规范,法律英语中,should,shall 就表示必须.,应该.,所以没有用must