应该特别注意防止我们的地球被污染。
Special attention should be paid to preventing our earth from being polluted.
对并发症的预防：在间发性的感染中应有医疗注意防止高血氨。
Prevention of secondary complications: medical attention during intercurrent infections to prevent hyperammonemia .
我们在强调开展积极的思想斗争的时候，仍然要注意防止“左”的错误。
While stressing the need for active ideological struggle, we should continue to guard against "Left" mistakes.
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