定西的张川城遗址，是我在少年时期美好的相遇。四川泸州的玉蟾山石窟，则是我踏上文物保护的起点。2009年，刚刚大学毕业的我作为四川泸州市普查队的一员，在这里完成了第一处文物实地调查。2024年5月，第四次全国文物普查实地调查开启，我作为重庆江津实地调查队长，与普查队员来到了长江北岸的石佛寺，我们在前期考古发掘的基础上，按照摩崖造像区、建筑基址区等五大区域的布局，丈量巨石、数据采集、照相记录，探寻实地调查全流程的工作方法，为江津900余处不可移动文物实地调查做准备。这种山水与建筑共生的格局，在中国寺庙遗址中极为罕见，也让包括我在内的新江津人深感自豪。
Thus, despite much effort, no gelling agent has yet been discovered that possesses all the properties and benefits of agar. Agar continues to be the best all-arounder: versatile, cheap, and established. And, if Gelidium agar should ever run out, and another colloid is not at hand, microbiologists could revert to culinary agar, which, although not as pure and transparent, offers a low-cost alternative to lab-grade agar.
，更多细节参见51吃瓜
Фото: Bob Strong / Reuters
Bill Harwood has been covering the U.S. space program full-time since 1984, first as Cape Canaveral bureau chief for United Press International and now as a consultant for CBS News.