他毫不气馁，继续留在赤道以南，在动身前往菲律宾观察下一个过境点之前，他一直忙于研究毛里求斯和马达加斯加群岛。
Undaunted, he remained south of the equator, keeping himself busy by studying the islands of Mauritius and Madagascar before setting off to observe the next transit in the Philippines.
这里曾经是一个非常具有象征性的过境点。
它的另一目的是减少在国际机场、港口、陆地过境点疾病传播的风险。
The IHR (2005) are also designed to reduce the risk of disease spread at international airports, ports and ground crossings.
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