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1·I am aware there is a very, very high level of concern amongst the people who crew these vessels including those who are in the most senior ranks... (but) I'm not sure about quitting.

我意识到在这些船上工作的人对此有非常非常高的关注，包括那些高级管员们…但是我不太确定退役问题。

2·There has got growing concern in recent years about the collectively quitting school affairs that take place one after another.

近年来，高校连续发生的集体退学事件引起了社会的广泛关注。