he always had a smile on his face
他脸上总是挂着微笑
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Even though he worked painfully arduously, he still always had a smile on his face.
虽然他打工大得很辛苦，但是他总是开心的，大大笑．。
youdao
He always had a smile on his face.
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