英文: “Liar,” I shot back with a grin.
中文: “说谎,”我咧着嘴笑,回敬了他一句。英文: When the rain returns, I will grin even more.
中文: 雨又回来时我甚至更为高兴。英文: He stood there with an embarrassed grin on his face.
中文: 他站在那里脸上带著尴尬的笑意。英文: Let me see you grin; do not let me see you frown.
中文: 让我看你笑逐颜开(露齿而笑),不要让我看你愁眉苦脸。英文: TRANSFORMATION FORMULAS OF A GAUSSIAN BEAM THROUGH PARABOLIC DI VERGING GRIN ROD LENS
中文: 高斯光束经抛物形发散梯度折射率棒透镜的变换公式