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Phiền mọi người nói rõ về nghĩa mấy chỗ này với ạ
'' before he was about to slip off into sleep''
"Whenever Thomas Edison felt stuck trying to solve a challenging problem, he would stop, and, while still sitting in his chair, hold two ball bearings in his hand. After a few minutes, just before he was about to slip off into sleep, the two ball bearings would fall out of his hand and onto the floor, waking him up. And that was his trigger to get back to work" (em có hiểu nghĩa của trigger nhưng không hiểu sao người viết lại dùng từ này trong câu)
Em cảm ơn
'' before he was about to slip off into sleep''
"Whenever Thomas Edison felt stuck trying to solve a challenging problem, he would stop, and, while still sitting in his chair, hold two ball bearings in his hand. After a few minutes, just before he was about to slip off into sleep, the two ball bearings would fall out of his hand and onto the floor, waking him up. And that was his trigger to get back to work" (em có hiểu nghĩa của trigger nhưng không hiểu sao người viết lại dùng từ này trong câu)
Em cảm ơn
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