They were standing on a pebble-strewn path in the farmer's field.
他们站在农夫牧场一条铺著鹅卵石的路上。
For standing wave field the influence of spontaneous emission can be negligible.
对驻波场，自发辐射的影响可以忽略。
My interest in the field is long-standing.
我对于这方面的兴趣是由来已久的了。
My interest in the field is long-standing.
我对于这方面的兴趣是由来已久的了。
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