The pain was confined to the midline and was aggravated by heavy labor.
这疼痛局限于正中线，因吃力的劳动而加剧。
Thee pain was confined to the midline and was aggravated by heavy labor.
这疼痛局限于正中线，因吃力的劳动而加剧。
For this reason companies that require heavy physical labor take safety very seriously.
因为这个原因，繁重的体力劳动的公司需要采取非常重视安全。
For this reason companies that require heavy physical labor take safety very seriously.
因为这个原因，繁重的体力劳动的公司需要采取非常重视安全。
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