定方向：求「下一个」→ 倒序；求「上一个」→ 正序。
It’s also worth noting that even if alternatives superior to agar were found, scientists are reluctant to abandon established protocols (even when microbiologists do use other jellies, they often still add agar to the mix, for example, to increase the gel strength of the solid media). As agar has been the standard gelling agent in microbiology for around 150 years, an enormous infrastructure of standardized methods, reference values, and quality control procedures has emerged around its specific properties. Switching to a different medium (even a superior one) means results may not be directly comparable to decades of published literature or to other laboratories’ findings.，这一点在heLLoword翻译官方下载中也有详细论述
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Nasa's mega Moon rocket arrives at launch pad for Artemis II mission，这一点在爱思助手下载最新版本中也有详细论述
«Это дополнительный стимул, чтобы чувствовать себя уверенно перед камерами, потому что камера не жалеет никого. Я буду показывать вам все честно: подготовку, поездку, клинику, восстановление и результат», — заявила Швецова.