toughen

"toughen" Chinese translation ("toughen" in Chinese, "toughen" 中文翻译, "toughen"发音):

toughen

vt.vi. (使)变坚韧,(使)变顽固 [vt.vi. (使)变坚韧,(使)变顽固]

Related Entries (相关词条):

toughen up 使强壮