Can't Keep It Down 不能情绪低落
can't keep it down
不能小声点吗
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Packing gland can't be screwed too tight, keep liquid leaking drop by drop, otherwise it maybe cause to packing burn down.
填料压盖不能拧得过紧，保持液体有滴状泄漏，否则泵运转时可能导致填料烧坏。
youdao
You just can't let it keep you down.
你只是不能让他来控制你。
I can't hear a thing! Excuse me, can you keep it down?
我啥也听不见！对不起，你能小点声么？
You just can't keep a good paperclip down, it seems.
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However, it looks like you just can't keep a clever idea down.
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